Melody a sequence notes of different pitches that form a musical piece
Accompaniment The vocal or instrumental 'backing' given to a melody.
Air A tune or a melody.
Sonata In the Baroque, the term 'sonata' was applied to a variety of works for solo instrument such as keyboard or violin, and for groups of instruments. In the transition from the Baroque to the Classical period, the term sonata underwent a change in usage, coming to mean a chamber-music genre for either a solo instrument (usually a keyboard), or a solo melody instrument with piano. Increasingly after 1800, the term applied to a form of large-scale musical argument, and it was generally used in this sense in musicology and musical analysis.
Theme a melody that defines the rest of the musical composition
Unison This word is written above music in which more than one section play or sing the same notes together, usually on a melody.
