A museme is a minimal unit of musical meaning, analgous to a morpheme in linguistics, "the basic unit of musical expression which in the framework of one given musical system is not further divisible without destruction of meaning." A museme may:

be broken down into component parts which are not in themselves meaningful within the framework of the musical language...but are nevertheless basic elements (not units) of musical expression which, when altered, may be compared to the phonemes of speech in that they alter the museme (morpheme) of which they are part and may thereby also alter its meaning. (Tagg 1979, p.71)

The term was coined by Philip Tagg and derived from the work of Charles Seeger (Middleton 1990, p.189).

Musematic repetition ("repetition of musemes" (ibid, p.269)) is repetition "at the level of the short figure, often used to generate an entire structural framework." (ibid, p.189) and contrasted with discursive repetition.

Source

• Middleton, Richard (1990/2002). Studying Popular Music. Philadelphia: Open University Press. ISBN 0335152759.
  • Tagg (1979).