- (plural concertos or concerti) usually refers to a musical work in which one solo instrument is accompanied by an orchestra. The concerto, as understood in this modern way, arose in the Baroque period side by side with the concerto grosso, which contrasted a small group of instruments with the rest of the orchestra. While the concerto grosso is confined to the Baroque period, the solo concerto has continued as a vital musical force to this day.
- (French: "kind" or "sort" from Latin: genus (stem gener-)) is a loose set of criteria for a category of composition.
- in the context of this Wikibook refers to the combinations and properties of instruments and/or voices used in a piece of music.
- (French: "first") generally means a first public performance of a piece of music.