Solo music is any repertoire written or arranged to be performed by a single musician without ensemble accompaniment (or with only incidental drones, continuo, or silence).
In Western art music it crystalized in the early Baroque through idiomatic writing for keyboard, lute, and unaccompanied voice, then expanded across the Classical and Romantic eras with virtuosic piano, violin, guitar, and wind solos. In many traditions worldwide, solo performance also serves ritual, meditative, pedagogical, or demonstrative purposes.
The genre prioritizes projection of a single musical line or performer’s persona, often highlighting timbral nuance, expressive rubato, dynamic range, and technical display.