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
clarinet quartet—ensemble/work for clarinet and strings, typically the traditional string trio comprising violin, viola, and cello. Note, "clarinet quartet" may refer to a quartet of clarinets, but the frequency of this quartet for clarinet and strings warrants the traditional name. Explore the clarinet quartet | wiki
larghetto—slow, but a bit faster than largo
opus [L], opera[pl], Op., Opp, WoO, Op. posth—work, as in a work of art. For unique identification, publishers/composers often assign an "opus number", abbreviated as "Op." (e.g. Op. 1). A range of works by opus number, uses the plural "opp." (e.g. "Opp. 1-3"). A single opus number may refer to a collection of works (e.g. a set of quartets) giving rise to designations like "Op. 1, No. 4". For misc. works without opus numbers, "WoO" is often used (e.g."Without Opus"). Posthumously assigned numbers may use "Op. posth". Opus numbers may not precisely reflect chronology (publication vs. composition), can be erroneous, sparse or duplicative. Thus, the works of some historically important composers may use separate catalog numbers (e.g. Bach, Haydn, Schubert). See wiki
quartet, quatuor [F], quartett [G], quartetto [I], cuarteto [S]—ensemble or work for four players the most important examples being the string quartet and the piano quartet
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.