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The LP (from long playing or long play) is an analog sound
storage medium Data storage is the recording (storing) of information (data) in a storage medium. Handwriting, phonographic recording, magnetic tape, and optical discs are all examples of storage media. Biological molecules such as RNA and DNA are con ...
, specifically a
phonograph record A phonograph record (also known as a gramophone record, especially in British English) or a vinyl record (for later varieties only) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove. The g ...
format characterized by: a speed of  
rpm Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min, or r⋅min−1) is a unit of rotational speed (or rotational frequency) for rotating machines. One revolution per minute is equivalent to hertz. Standards ISO 80000-3:2019 def ...
; a 12- or 10-inch (30- or 25-cm) diameter; use of the "microgroove" groove specification; and a vinyl (a copolymer of vinyl chloride acetate) composition disk. Introduced by
Columbia Records Columbia Records is an American reco ...
in 1948, it was soon adopted as a new standard by the entire US record industry and, apart from a few relatively minor refinements and the important later addition of stereophonic sound in 1957, it remained the standard format for record albums during a period in
popular music Popular music is music with wide appeal that is typically distributed to large audiences through the music industry. These forms and styles can be enjoyed and performed by people with little or no musical training.Popular Music. (2015). ''Fun ...
known as the
album era The album era (sometimes, album-rock era) was a period in popular music, usually defined as the mid-1960s through the mid-2000s, in which the album—a collection of songs issued on physical media—was the dominant form of recorded music expr ...
. LP was originally a
trademark A trademark (also written trade mark or trade-mark) is a form of intellectual property that consists of a word, phrase, symbol, design, or a combination that identifies a Good (economics and accounting), product or Service (economics), service f ...
of Columbia and competed against the smaller 7-inch sized "45" or "single" format by
RCA Victor RCA Records is an American record label owned by Sony Music Entertainment, a subsidiary of Sony Group Corporation. It is one of Sony Music's four flagship labels, alongside Columbia Records (its former longtime rival), Arista Records and Epic ...
, eventually ending up on top. Today in the
vinyl revival The vinyl revival, also known as the vinyl resurgence, is the renewed interest and increased sales of vinyl records, or gramophone records, that has been taking place in the music industry. Beginning in 2007, vinyl records experienced renewed po ...
era, a large majority of records are based on the LP format and hence the LP name continues to be in use today to refer to new records.


Format advantages

At the time the LP was introduced, nearly all phonograph records for home use were made of an abrasive (and therefore noisy)
shellac Shellac () is a resin secreted by the female Kerria lacca, lac bug on trees in the forests of India and Thailand. Chemically, it is mainly composed of aleuritic acid, jalaric acid, shellolic acid, and other natural waxes. It is processed and s ...
compound, employed a much larger groove, and played at approximately 78 revolutions per minute (rpm), limiting the playing time of a 12-inch diameter record to less than five minutes per side. The new product was a 12- or 10-inch (30 or 25 cm) fine-grooved disc made of PVC ("vinyl") and played with a smaller-tipped "microgroove"
stylus A stylus is a writing utensil or tool for scribing or marking into softer materials. Different styluses were used to write in cuneiform by pressing into wet clay, and to scribe or carve into a wax tablet. Very hard styluses are also used to En ...
at a speed of  rpm. Each side of a 12-inch LP could play for about 25 minutes, allowing for a total runtime of approximately 50 minutes.


History

Despite some earlier experiments and attempts at commercial marketing, the Long Play format did not begin to enjoy commercial popularity until the early 1950s.


Predecessors

Starting in 1926, the
Edison Records Edison Records was one of the early record labels that pioneered sound recording and reproduction, and was an important and successful company in the early recording industry. The first phonograph cylinders were manufactured in 1888, followed by ...
company experimented with issuing Edison Disc Records in long play format of 24 minutes per side. The system and playback system (still mostly wind-up
phonograph A phonograph, later called a gramophone, and since the 1940s a record player, or more recently a turntable, is a device for the mechanical and analogue reproduction of sound. The sound vibration Waveform, waveforms are recorded as correspond ...
s) proved unreliable and was a commercial failure.


Soundtrack discs

By mid-1931 all motion picture studios were recording on optical soundtracks, but sets of soundtrack discs, mastered by dubbing from the optical tracks and scaled down to 12 inches to cut costs, were made as late as 1936 for distribution to theaters still equipped with disc-only sound projectors.


Radio transcription discs

Unless the quantity required was very small, pressed discs were a more economical medium for distributing high-quality audio than tape, and CD mastering was, in the early years of that technology, very expensive, so the use of LP-format transcription discs continued into the 1990s. The '' King Biscuit Flower Hour'' is a late example, as are Westwood One's ''The Beatle Years'' and '' Doctor Demento'' programs, which were sent to stations on LP at least through 1992.


RCA Victor

In September 1931,
RCA Victor RCA Records is an American record label owned by Sony Music Entertainment, a subsidiary of Sony Group Corporation. It is one of Sony Music's four flagship labels, alongside Columbia Records (its former longtime rival), Arista Records and Epic ...
launched the first commercially available vinyl long-playing record, marketed as "Program-Transcription" records. These revolutionary discs were designed for playback at  rpm and pressed on a 30 cm diameter flexible plastic disc, with a duration of about ten minutes playing time per side. Victor's early introduction of a long-playing record was a commercial failure for several reasons including the lack of affordable, consumer playback equipment and consumer rejection during the
Great Depression The Great Depression was a severe global economic downturn from 1929 to 1939. The period was characterized by high rates of unemployment and poverty, drastic reductions in industrial production and international trade, and widespread bank and ...
. These "Program Transcription" discs, as Victor called them, played at  rpm and used a somewhat finer and more closely spaced groove than typical 78 rpm records. They were to be played with a special "Chromium Orange" chrome-plated steel needle. The 10-inch discs, mostly used for popular and light classical music, were normally pressed in shellac, but the 12-inch discs, mostly used for "serious" classical music, were pressed in Victor's new vinyl-based "Victrolac" compound, which provided a much quieter playing surface. These records could hold up to 15 minutes per side. Beethoven's Fifth Symphony, performed by the
Philadelphia Orchestra The Philadelphia Orchestra is an American symphony orchestra, based in Philadelphia. One of the " Big Five" American orchestras, the orchestra is based at the Kimmel Center for the Performing Arts, where it performs its subscription concerts, n ...
under
Leopold Stokowski Leopold Anthony Stokowski (18 April 1882 – 13 September 1977) was a British-born American conductor. One of the leading conductors of the early and mid-20th century, he is best known for his long association with the Philadelphia Orchestra. H ...
, was the first 12-inch recording issued. Compton Pakensham, reviewing the event in ''
The New York Times ''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...
'', wrote, "What we were not prepared for was the quality of reproduction ... incomparably fuller."


Development of LP

CBS Laboratories CBS Laboratories or CBS Labs (later known as the CBS Technology Center or CTC) was the technology research and development organization of the CBS television network. Innovations developed at the labs included many groundbreaking broadcast, industr ...
head research scientist Peter Goldmark led Columbia's team to develop a phonograph record that would hold at least 20 minutes per side. Although Goldmark was the chief scientist who selected the team, he delegated most of the experimental work to William S. Bachman, whom Goldmark had lured from General Electric, and Howard H. Scott. Research began in 1939, was suspended during
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, and resumed in 1945..
Columbia Records Columbia Records is an American reco ...
unveiled the LP at a press conference in the Waldorf Astoria on June 21, 1948, in two formats: in diameter, matching that of 78 rpm singles, and in diameter.''The First Long-Playing Disc''
Library of Congress (Congress.gov) (accessdate June 21, 2021)
The initial release of 133 recordings were: 85 12-inch classical LPs (ML 4001 to 4085), 26 10-inch classics (ML 2001 to 2026), eighteen 10-inch popular numbers (CL 6001 to 6018), and four 10-inch juvenile records (JL 8001 to 8004). According to the 1949 Columbia catalog, issued September 1948, the first twelve-inch LP was
Mendelssohn Jakob Ludwig Felix Mendelssohn Bartholdy (3 February 18094 November 1847), widely known as Felix Mendelssohn, was a German composer, pianist, organist and conductor of the early Romantic period. Mendelssohn's compositions include symphonie ...
's Concerto in E Minor by Nathan Milstein on the violin with the
New York Philharmonic The New York Philharmonic is an American symphony orchestra based in New York City. Known officially as the ''Philharmonic-Symphony Society of New York, Inc.'', and globally known as the ''New York Philharmonic Orchestra'' (NYPO) or the ''New Yo ...
, conducted by
Bruno Walter Bruno Walter (born Bruno Schlesinger, September 15, 1876February 17, 1962) was a Germany, German-born Conducting, conductor, pianist, and composer. Born in Berlin, he escaped Nazi Germany in 1933, was naturalised as a French people, French cit ...
(ML 4001). Three ten-inch series were released: 'popular', starting with the reissue of '' The Voice of Frank Sinatra'' (CL 6001); 'classical', numbering from Beethoven's 8th symphony (ML 2001), and 'juvenile', commencing with ''Nursery Songs'' by
Gene Kelly Eugene Curran Kelly (August 23, 1912 – February 2, 1996) was an American dancer, actor, singer, director and choreographer. He was known for his energetic and athletic dancing style and sought to create a new form of American dance accessibl ...
(JL 8001). Also released at this time were a pair of 2-LP sets,
Puccini Giacomo Puccini (22 December 1858 29 November 1924) was an Italian composer known primarily for his operas. Regarded as the greatest and most successful proponent of Italian opera after Verdi, he was descended from a long line of composers, s ...
's ''
La Bohème ''La bohème'' ( , ) is an opera in four acts,Puccini called the divisions '':wikt:quadro, quadri'', ''wikt:tableau, tableaux'' or "images", rather than ''atti'' (acts). composed by Giacomo Puccini between 1893 and 1895 to an Italian libretto b ...
'' (SL-1) and Humperdinck's ''
Hansel and Gretel "Hansel and Gretel" (; ) is a German fairy tale collected by the Brothers Grimm and published in 1812 as part of ''Grimms' Fairy Tales'' (KHM 15). Hansel and Gretel are siblings who are abandoned in a forest and fall into the hands of a witch ...
'' (SL-2). All 12-inch pressings were of 220 grams vinyl. Columbia may have planned for the
Bach Johann Sebastian Bach (German: �joːhan zeˈbasti̯an baχ ( – 28 July 1750) was a German composer and musician of the late Baroque period. He is known for his prolific output across a variety of instruments and forms, including the or ...
album ML 4002 to be the first since the releases came in alphabetical order by composer (the first 54 LPS, ML 4002 thru ML 4055, are in order from Bach to
Tchaikovsky Pyotr Ilyich Tchaikovsky ( ; 7 May 1840 – 6 November 1893) was a Russian composer during the Romantic period. He was the first Russian composer whose music made a lasting impression internationally. Tchaikovsky wrote some of the most popular ...
) Nathan Milstein was very popular in the 1940s, however, so his performance of the Mendelssohn concerto was moved to ML 4001.


Public reception

When the LP was introduced in 1948, the 78 was the conventional format for phonograph records. By 1952, 78s still accounted for slightly more than half of the units sold in the United States, and just under half of the dollar sales. The 45, oriented toward the single song, accounted for just over 30% of unit sales and just over 25% of dollar sales. The LP represented not quite 17% of unit sales and just over 26% of dollar sales. Ten years after their introduction, the share of unit sales for LPs in the US was almost 25%, and of dollar sales 58%. Most of the remainder was taken up by the 45; 78s accounted for only 2% of unit sales and 1% of dollar sales. The popularity of the LP ushered in the "
album era The album era (sometimes, album-rock era) was a period in popular music, usually defined as the mid-1960s through the mid-2000s, in which the album—a collection of songs issued on physical media—was the dominant form of recorded music expr ...
" of English-language popular music, beginning in the late 1950s, as performers took advantage of the longer playing time to create coherent themes or concept albums. "The rise of the LP as a form—as an artistic entity, as they used to say—has complicated how we perceive and remember what was once the most evanescent of the arts",
Robert Christgau Robert Thomas Christgau ( ; born April 18, 1942) is an American music journalist and essayist. Among the most influential music critics, he began his career in the late 1960s as one of the earliest professional rock critics and later became a ...
wrote in '' Christgau's Record Guide: Rock Albums of the Seventies'' (1981). "The album may prove a '70s totem—briefer configurations were making a comeback by decade's end. But for the '70s it will remain the basic musical unit, and that's OK with me. I've found over the years that the long-playing record, with its twenty-minute sides and four-to-six compositions/performances per side, suits my habits of concentration perfectly." Although the popularity of LPs (as well as 45s) began to decline in the late 1970s with the advent of
Compact Cassette The Compact Cassette, also commonly called a cassette tape, audio cassette, or simply tape or cassette, is an analog magnetic tape recording format for audio recording and playback. Invented by Lou Ottens and his team at the Dutch company ...
s, and later in the 1980s with the advent of digital compact discs, the LP survives as a format to the present day. Vinyl LP records enjoyed a resurgence in popularity throughout the 2010s and US vinyl sales in 2017 reached 15.6 million and 27 million for 2020.RIAA 2018 Year-End Music Industry Revenue Report
/ref> In 2022, US vinyl sales reached 41 million units, surpassing sales of the Compact Disc for the first time since 1987, once again making the LP the highest selling physical format there.


Competing formats

Reel-to-reel magnetic tape recorders posed a new challenge to the LP in the 1950s, but the higher cost of pre-recorded tapes was one of several factors that confined tape to a niche market. Cartridge and
cassette tape The Compact Cassette, also commonly called a cassette tape, audio cassette, or simply tape or cassette, is an analog audio, analog magnetic tape recording format for Sound recording and reproduction, audio recording and playback. Invented by L ...
s were more convenient and less expensive than reel-to-reel tapes, and they became popular for use in automobiles beginning in the mid-1960s. The LP was not seriously challenged as the primary medium for listening to recorded music at home until the 1970s, however, when the audio quality of the cassette was greatly improved by better tape formulations and noise-reduction systems. By 1983, cassettes were outselling LPs in the US. The Compact Disc (CD) was introduced in 1982. It offered a recording that was, theoretically, almost noiseless and not audibly degraded by repeated playing or slight scuffs and scratches. At first, the much higher prices of CDs and CD players limited their target market to affluent early adopters and
audiophile An audiophile (from + ) is a person who is enthusiastic about high-fidelity sound reproduction. The audiophile seeks to achieve high sound quality in the audio reproduction of recorded music, typically in a quiet listening space in a room with ...
s; but prices came down, and by 1988, CDs outsold LPs. The CD became the top-selling format, over cassettes, in 1992. Along with phonograph records in other formats, some of which were made of other materials, LPs are now widely referred to simply as "vinyl". Since the late 1990s there has been a
vinyl revival The vinyl revival, also known as the vinyl resurgence, is the renewed interest and increased sales of vinyl records, or gramophone records, that has been taking place in the music industry. Beginning in 2007, vinyl records experienced renewed po ...
. Demand has increased in niche markets, particularly among audiophiles, DJs, and fans of indie music, but most music sales as of 2018 came from online downloads and online streaming because of their availability, convenience, and price.


Playing time

With the advent of
sound film A sound film is a Film, motion picture with synchronization, synchronized sound, or sound technologically coupled to image, as opposed to a silent film. The first known public exhibition of projected sound films took place in Paris in 1900, bu ...
or "talkies", the need for greater storage space made  rpm records more appealing. Soundtracks – played on records synchronized to movie projectors in theatres – could not fit onto the five minutes per side that 78s offered. When initially introduced, 12-inch LPs played for a maximum of about 23 minutes per side, 10-inch records for around 15. They were not an immediate success, however, as they were released during the height of the Great Depression, and seemed frivolous to the many impoverished of the time. It was not until "microgroove" was developed by Columbia Records in 1948 that Long Players (LPs) reached their maximum playtime, which has continued to modern times. Economics and tastes initially determined which kind of music was available on each format. Recording company executives believed upscale classical music fans would be eager to hear a Beethoven symphony or a Mozart concerto without having to flip over multiple, four-minute-per-side 78s, and that pop music fans, who were used to listening to one song at a time, would find the shorter time of the 10-inch LP sufficient. As a result, the 12-inch format was reserved solely for higher-priced classical recordings and Broadway shows. Popular music continued to appear only on 10-inch records. However, by the mid-1950s, the 10-inch LP, like its similarly sized 78 rpm cousin, lost the format war and was discontinued.


Groove

The close spacing of the spiral groove that allowed more playing time on a  rpm microgroove LP also allowed a faint pre-echo of upcoming loud sounds. The cutting stylus unavoidably transferred some of the subsequent groove's signal to the previous groove. It was discernible by some listeners throughout certain recordings, and a quiet passage followed by a loud sound would allow anyone to hear a faint pre-echo of the loud sound 1.8 seconds ahead of time.


Further advances in LP

The following are some significant advances in the format: * Helium-cooled cutting heads that could withstand higher levels of high frequencies (Neumann SX68); previously, the cutting engineer had to reduce the HF content of the signal sent to the record cutting head, otherwise the delicate coils could burn out * Elliptical
stylus A stylus is a writing utensil or tool for scribing or marking into softer materials. Different styluses were used to write in cuneiform by pressing into wet clay, and to scribe or carve into a wax tablet. Very hard styluses are also used to En ...
marketed by several manufacturers at the end of the 1960s * Cartridges that operate at lower tracking forces (2.0 grams / 20 mN), beginning from the mid-1960s * Half-speed and one-third-speed record cutting, which extends the usable bandwidth of the record * Longer-lasting, antistatic record compounds (e.g.: RCA Dynaflex, Q-540) * More advanced stylus tip shapes (Shibata, Van den Hul, MicroLine, etc.) *
Direct metal mastering Direct metal mastering (DMM) is an analog audio disc mastering technique jointly developed by two German companies, Telefunken-Decca ( Teldec) and Georg Neumann GmbH, toward the end of the 20th century after having seen the same technology us ...
* Noise-reduction ( CX encoding,
dbx dbx or DBX may refer to: * dbx (debugger), a Unix source-level debugger * dbx (company), a professional audio recording equipment company ** dbx (noise reduction), a noise reduction system invented by dbx, Inc. * .dbx, the file extension for Micros ...
encoding), starting from 1973 * In the 1970s,
quadraphonic sound Quadraphonic (or quadrophonic, also called quadrasonic or by the neologism quadio formed by analogy with "stereo"">portmanteau.html" ;"title="/nowiki>portmanteau">formed by analogy with "stereo" sound – equivalent to what is now called 4.0 s ...
(four-channel) records became available in both
discrete Discrete may refer to: *Discrete particle or quantum in physics, for example in quantum theory * Discrete device, an electronic component with just one circuit element, either passive or active, other than an integrated circuit * Discrete group, ...
and
matrix Matrix (: matrices or matrixes) or MATRIX may refer to: Science and mathematics * Matrix (mathematics), a rectangular array of numbers, symbols or expressions * Matrix (logic), part of a formula in prenex normal form * Matrix (biology), the m ...
formats. These did not achieve the popularity of stereo records due to the expense of consumer playback equipment, competing and incompatible quad recording standards, and a lack of quality in most quad-remix releases.


See also

*
Album cover An album cover (also referred to as album art) is the front packaging art of a commercially released album, studio album or other audio recordings. The term can refer to: * the printed paperboard covers typically used to package: ** sets of a ...
* Conservation and restoration of vinyl discs *
Extended play An extended play (EP) is a Sound recording and reproduction, musical recording that contains more tracks than a Single (music), single but fewer than an album. Contemporary EPs generally contain up to eight tracks and have a playing time of 1 ...
(EP)


References


External links


"Dreams of Vinyl: The Story of the LP Record" by Jac Holzman
{{DEFAULTSORT:LP Record 1948 in music 1948 in technology Album types Audio storage Audiovisual introductions in 1948 Products introduced in 1948 Recorded music