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
piano quartet, Klavierquartett [G], Quatuor avec piano [F]—An ensemble (or work) comprising violin, viola, cello, and piano. Most of the great Classical and Romantic composers produced one or more works for this combination, many of which are masterworks. Explore the piano quartet | 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