ADJ

beautiful, good, great, lovely
catchy
mournful, sad
country, folk, pop/popular, traditional
a Hungarian folk song
bawdy, children's, drinking, love, patriotic, protest, religious
After a few drinks, they were all singing bawdy songs at the top of their voices. a protest song written in the sixties
theme, title
the theme song from 'The Godfather' the title song from the Beatles' album 'Help!'

VERB + SONG

compose, write
do, perform, play, sing
They performed another two songs as encores. Sing us a song, Susanna!
record

SONG + NOUN

writer (also songwriter)
a singer-songwriter
contest

PREP

in (a/the) ~
Important historical events were commemorated in song
~ about
a song about love

VERB + SONG

break into, burst into
He strummed a couple of chords on the guitar and they all burst into song

PREP

in ~
He heard voices raised in song