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,
passage,
movement,
larghetto,
suite,
symphonic poem,
tone poem,
medley,
pastiche,
potpourri,
nocturne,
notturno,
song,
vocal,
study,
capriccio,
motet,
program music,
programme music,
incidental music,
csardas,
czardas.