allegro [I]—fast, lively tempo. From the Italian word for cheerful or gay.
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
larghetto—slow, but a bit faster than largo
rondo—sectional movement form featuring a recurring refrain between contrasting episodes in a variety of plans, a typical one being ABACABA (A is the refrain; B and C are episodes). Often used for finales.
Siciliana, Siciliano, Sicilienne—a musical form often included as a movement within larger pieces of music starting in the Baroque period. It is in a slow 6/8 or 12/8 time with lilting rhythms making it somewhat resemble a slow jig, and is usually in a minor key. It was used for arias in Baroque operas, and often appeared as a movement in instrumental works. The siciliano evokes a pastoral mood, and is often characterized by a large number of dotted rhythms. wiki
string trio, Streichtrio [G], Trio d'archi [I], Trio à cordes [F], Trío de cuerdas [S]
—a work for three stringed instruments, most commonly violin, viola and cello. A more rarefied form than the string quartet perhaps because the texture is sparse (each instrument highly exposed) and the means more difficult for natural harmonic richness. But these become challenges and assets in the great trios. Trios almost always emphasize countrapuntal writing with each of the three players in strong relief.