
A jam session is a relatively informal musical event, process, or activity where
musicians, typically instrumentalists, play improvised solos and
vamp over tunes,
drones, songs, and
chord progressions. To "jam" is to
improvise music without extensive preparation or predefined
arrangements. Original jam sessions, also called "free flow sessions," are often used by musicians to develop new material (music) and find suitable
arrangements. Both styles can be used simply as a social gathering and communal practice session. Jam sessions may be based upon existing songs or forms, may be loosely based on an agreed
chord progression or
chart suggested by one participant, or may be wholly improvisational. Jam sessions can range from very loose gatherings of amateurs to evenings where a jam session coordinator or host acts as a "
gatekeeper" so that appropriate-level performers take the stage to sophisticated improvised recording sessions by professionals which are intended to be broadcast live on radio or TV or edited and released to the public.
Jazz
One source for the phrase "jam session" came about in the 1920s when white and black musicians would congregate after their regular paying gigs to play the jazz they could not play in the "
Paul Whiteman
Paul Samuel Whiteman (March 28, 1890 – December 29, 1967) was an American Jazz bandleader, composer, orchestral director, and violinist.
As the leader of one of the most popular dance bands in the United States during the 1920s and early 193 ...
" style bands they played in. When
Bing Crosby
Harry Lillis "Bing" Crosby Jr. (May 3, 1903 – October 14, 1977) was an American singer, comedian, entertainer and actor. The first multimedia star, he was one of the most popular and influential musical artists of the 20th century worldwi ...
attended these sessions, the musicians would say he was "jammin' the beat," since he would clap on the one and the three. Thus these sessions became known as "jam sessions."
Mezz Mezzrow also gives this more detailed and self-referential description, based on his experience at the jazz speakeasy known as the Three Deuces:
The New York scene 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 ...
was famous for its after-hours jam sessions. One of the most famous was the regular after-hours jam at
Minton's Playhouse in
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
that ran in the 1940s and early 1950s. The jam sessions at Minton's were a fertile meeting place and proving ground for both established soloists like
Ben Webster and
Lester Young as well as the younger jazz musicians who would soon become leading exponents of the
bebop
Bebop or bop is a style of jazz developed in the early to mid-1940s in the United States. The style features compositions characterized by a fast tempo (usually exceeding 200 bpm), complex chord progressions with rapid chord changes and numerou ...
movement, including
Thelonious Monk (Minton's house pianist), saxophone player
Charlie Parker
Charles Parker Jr. (August 29, 1920 – March 12, 1955), nicknamed "Bird" or "Yardbird", was an American jazz Saxophone, saxophonist, bandleader, and composer. Parker was a highly influential soloist and leading figure in the development of beb ...
, and trumpeter
Dizzy Gillespie
John Birks "Dizzy" Gillespie ( ; October 21, 1917 – January 6, 1993) was an American jazz trumpeter, bandleader, composer, educator and singer. He was a trumpet virtuoso and improvisation, improviser, building on the virtuosic style of Roy El ...
. The Minton's jams had competitive "
cutting contests," in which soloists would try to keep up with the house band and outdo each other in improvisational skill.
Afro-Cuban music
Influenced by jazz,
Cuban music saw the emergence of improvised jam sessions during the
filin movement of the 1940s, where
boleros,
sones and other song types were performed in an extended form called ''
descarga''. During the 1950s these ''descargas'' became the basis of a new genre of improvised jams based on the
son montuno with notable jazz influences pioneered by the likes of
Julio Gutiérrez and
Cachao. During the 1960s, ''descargas'' played an important role in the development of
salsa, especially the
salsa dura style.
Rock

As the instrumental proficiency of rock musicians improved in the 1960s and early 1970s, onstage jamming—free improvisation—also became a regular feature of rock music; bands such as
Pink Floyd,
Cream,
The Rolling Stones,
the Jimi Hendrix Experience,
Deep Purple,
The Who,
the Grateful Dead,
AC/DC
AC/DC are an Australian rock band formed in Sydney in 1973. Their music has been variously described as hard rock, blues rock and Heavy metal music, heavy metal, although the band calls it simply "rock and roll". They are cited as a formativ ...
,
Led Zeppelin,
Santana
Santana may refer to:
Transportation
* Volkswagen Santana, an automobile
* Santana Cycles, manufacturer of tandem bicycles
* Santana Motors, a former Spanish automobile manufacturer
* Sailboat designs by W. D. Schock Corp
** Santana 20
** Santan ...
,
King Crimson
King Crimson were an English progressive rock band formed in London in 1968 by Robert Fripp, Michael Giles, Greg Lake, Ian McDonald (musician), Ian McDonald and Peter Sinfield. Guitarist Fripp remained the only constant member throughout the ...
,
Lynyrd Skynyrd,
Steely Dan, and the
Allman Brothers Band would feature live improvised performances that could last 10 to 20 minutes or longer.
In this context, jams are not casual congregations, but rather improvised portions of rehearsed public set lists.
Jam bands
The
Grateful Dead are often credited as being the first jam band, dating back as early as 1965 providing freeform improvisation at the
Acid Tests put on by the
Merry Pranksters. Other bands in the late '60s incorporated live jam techniques like
Cream yet the Grateful Dead and the
Allman Brothers allowed the "jam band" to become a genre unto itself; more recent bands following in their steps include
Phish,
moe.,
Umphreys Mcgee, and
Widespread Panic, all of which feature extended improvisational sessions. Other bands such as the
Red Hot Chili Peppers also regularly perform live jam sessions.
Bluegrass
Bluegrass music
Bluegrass music is a genre of American roots music that developed in the 1940s in the Appalachian region of the United States. The genre derives its name from the band Bill Monroe and the Blue Grass Boys. Bluegrass has roots in African America ...
also features a tradition of jamming. Bluegrass jams happen in the parking lots and campgrounds of bluegrass
festival
A festival is an event celebrated by a community and centering on some characteristic aspect or aspects of that community and its religion or cultures. It is often marked as a local or national holiday, Melā, mela, or Muslim holidays, eid. A ...
s, in music stores, bars and restaurants and on stages. Bluegrass jams tend to be segregated by the skill level of the players. Slow jams for beginners provide an entry point. Open bluegrass jams are open to all comers, but the players in an open jam will expect a certain level of proficiency from participants. The abilities to hear
chord progressions and keep time are essential, and the ability to play improvised leads that contain at least a suggestion of the melody is desirable. Jams that require advanced musical proficiency are generally private events, by invitation only.
Soulquarians
Members of the
Soulquarians, an alternative-minded
black music collective active from the late 1990s to the early 2000s, held jam sessions while recording their respective albums at
Electric Lady Studios. This began in 1997 when the singer
D'Angelo and the drummer-producer
Questlove (of
The Roots) prepared to record the former's ''
Voodoo'' (2000) album at the studio. Their sessions there over the next five years resulted in the Roots' albums ''
Things Fall Apart'' (1999) and ''
Phrenology'' (2002), singer
Erykah Badu's second album ''
Mama's Gun'' (2000), rapper
Common's albums ''
Like Water for Chocolate'' (2000) and ''
Electric Circus'' (2002), and singer
Bilal's debut album ''
1st Born Second''. Badu has said that "just about everything from
'Mama's Gun''was a jam."

According to music journalist Michael Gonzales, their sessions were marked by an experimentation with "dirty soul, muddy water blues,
Black Ark dub science, mix-master madness, screeching guitars, old school hip-hop, gutbucket romanticism, inspired lyricism, African chats and aesthetics, pimpin' politics, strange
Moogs,
Kraftwerk synths and spacey noise." The musical approach also influenced the collective's associated musicians, including rapper
Mos Def's ''
Black on Both Sides'' (1999), singer
Res's ''
How I Do'' (2001), and rapper
Talib Kweli's ''
Quality'' (2002).
Bilal held improvisatory jam sessions while recording his second album, ''
Love for Sale'', at Electric Lady, although its experimental direction alienated his label from releasing it, and a subsequent
leak led to its indefinite shelving. Common's similarly experimental ''Electric Circus'' sold disappointingly, which discouraged
MCA Records, Common and the Roots' label, from letting the artistically-free environment at the studio to continue.
In 2018, leading up to the
Grammy Award
The Grammy Awards, stylized as GRAMMY, and often referred to as The Grammys, are awards presented by The Recording Academy of the United States to recognize outstanding achievements in music. They are regarded by many as the most prestigious ...
s, the Roots used their four-day residency at the
Gramercy Theatre in New York to "revive a long tradition of jam-session concerts with unannounced special guests," including Common,
Big K.R.I.T.
Justin Lewis Scott (born August 26, 1986), known professionally as Big K.R.I.T. (a backronym for King Remembered in Time), is an American rapper and record producer. Born in Meridian, Mississippi, he began his musical career in 2005. He was sign ...
,
Wyclef Jean,
Roxanne Shanté,
Gary Clark Jr., and
Mtume.
See also
*
Jamming (dance)
*
Free improvisation
*
Free jazz
*
Freestyle rap
*
Scat singing
*
Session musician and
Irish traditional music session
References
External links
Finding Bluegrass (and acoustic folk) jam sessionsJazz jam sessions in Tokyo, Japan
{{Authority control
Musical improvisation
Jazz events
Jazz techniques
Jazz terminology