Other hyponyms of piece of music include
morceau,
sheet music,
arrangement,
musical arrangement,
realisation,
realization,
intermezzo,
introit,
solo,
duet,
duette,
duo,
trio,
quartet,
quartette,
quintet,
quintette,
sestet,
sextet,
sextette,
septet,
septette,
octet,
octette,
bagatelle,
divertimento,
serenade,
canon,
etude,
idyl,
idyll,
pastoral,
pastorale,
sonata,
toccata,
fantasia,
musical passage,
passage,
movement,
larghetto,
suite,
tone poem,
medley,
pastiche,
potpourri,
nocturne,
notturno,
song,
vocal,
study,
capriccio,
motet,
program music,
programme music,
incidental music,
csardas,
czardas.