allegro [I]—fast, lively tempo. From the Italian word for cheerful or gay.
andante [I]—moderately slow tempo (e.g. walking). Faster than adagio but slower than allegretto
chamber music, Kammermusik [G], musique de chambre [F], musica da camera [I], musica cameralis [L]—"Classical Music" for a small ensemble, generally 8 or fewer players with a canonical emphasis on 3-6 players. explore
duo, duet, dueto [S], duetto [I], duett [G]—a work for two instruments; the ensemble itself
Rhapsody, rapsodie [F], rapsodic, rapsodico [I]—a free structure, a flight of fancy, typically featuring a wide range of moods, expressions and colors. Often features a recurring theme(s) and an episodic form.
sostenuto [I], soutenu [F]—sustained, perhaps a bit slow