Gesolreut (sometimes split into the parts G sol re ut) is a music term dating to the

medieval period In the history of Europe, the Middle Ages or medieval period lasted approximately from the 5th to the late 15th centuries, similarly to the post-classical period of World history (field), global history. It began with the fall of the West ...

. It is the word used for the pitches g and g♯ within the

hexachord In music, a hexachord (also hexachordon) is a six- note series, as exhibited in a scale ( hexatonic or hexad) or tone row. The term was adopted in this sense during the Middle Ages and adapted in the 20th century in Milton Babbitt's serial t ...

system devised by

Guido of Arezzo Guido of Arezzo (; – after 1033) was an Italian music theorist and pedagogue of High medieval music. A Benedictine monk, he is regarded as the inventor—or by some, developer—of the modern Staff (music), staff notation that had a massive ...

. It is the seventh compound name utilized in the

Guidonian hand The Guidonian hand was a mnemonic device used to assist singers in learning to sight reading, sight-sing. Some form of the device may have been used by Guido of Arezzo, a medieval music theory, music theorist who wrote a number of treatises, incl ...

mnemonic A mnemonic device ( ), memory trick or memory device is any learning technique that aids information retention or retrieval in the human memory, often by associating the information with something that is easier to remember. It makes use of e ...

device for

sight-singing In music, sight-reading, also called ''a prima vista'' (Italian language, Italian meaning, "at first sight"), is the practice of reading and performing of a piece in a music notation that the performer has not seen or learned before. Sight-singi ...

. In this method, the pitch g/g# is sung using either sol, re, or ut, depending on what hexachord is being used.

References

{{reflist Music mnemonics Musical notation Medieval music theory