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 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
poco, un poco, poco a poco—a little bit, e.g. "andante un poco moto" is andante with a little more motion than typical. "poco a poco" means a little bit at a time, gradually.
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