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
humoresca [I], humoresque [F], humoreske [G]—an instrumental piece with a humorous or fanciful character
nocturne [F], notturno [I], nocturno, Nachtstück [G]—Night music. A romantic character piece depicting moods of the evening or night: quiet, reflective, perhaps romance and melancholy or even restlessness and fantasy. The most famous nocturnes come originally from the piano literature, e.g. John Field and Chopin, et. al.
piano trio, Klaviertrio [G], Trio avec piano [F]—ensemble comprising violin, cello, and piano or a composition for such an ensemble. Second only to the string quartet as an essential genre, form, and ensemble of chamber music, filling a large part of the classic and modern repertoire with contributions from nearly every important composer. Explore the piano trio | wiki
piece, pièce [F], stück [G], stücke [pl], pezzo [I], pezzi[pl]—a single-movement, self-sufficient musical work. Often used for short, individual works in a set or simply to indicate brevity without a titular suggestion of form or character.Chiefly contrasted with the term "movement", a piece which is an integral part of a larger whole without which it would be incomplete.
serenade, serenada, serenata [I], sérénade [F]—A suite of movements like a divertimento with similar connotations of lightheartedness, pleasure and relative calm with an emphasis on lyricism and often beginning with a march. Historically evokes the evening, outdoors, an honorific or amorous tribute, especially from a suitor to a lover in a window or balcony. The word serenade has its Latin origins the Latin word for "calm" or serene. wiki