a short metrical composition intended or adapted for singing, esp. one in rhymed stanzas; a lyric; a ballad.

a musical piece adapted for singing or simulating a piece to be sung

Mendelssohn's Songs without Words.

poetical composition; poetry.

the art or act of singing; vocal music.

something that is sung.

an elaborate vocal signal produced by an animal, as the distinctive sounds produced by certain birds, frogs, etc., in a courtship or territorial display. ?

for a song

at a very low price; as a bargain

We bought the rug for a song when the estate was auctioned off.

noun

air , anthem , aria , ballad , canticle , carol , chant , chorale , chorus , ditty , expression , golden oldie , hymn , lay , lullaby , lyric , melody , number , oldie , opera , piece , poem , psalm , refrain , rock , rock and roll , round , shanty , strain , tune , verse , vocal , arietta , blues , cabaletta , call , cant , cantata , canzone , chanson , chansonnette , chanty , composition , dirge , glee , lied , lilt , music , onody , pan , pittance , poetry , rhapsody , roundelay , shantey , solo , sonnet , threnody