ritual, traditional
Gregorian
a group of monks singing Gregorian chant

football (BrE)
You could hear the football chants a long way from the stadium.

sing
keep up
The crowd kept up an incessant chant of ‘Out! Out! Out!’

hear

amid chants
to chants
The band left the stage to chants of ‘We want more! We want more!’

chant of

Chant is used with these nouns as the subject:
crowd, demonstrator, fan, mob, monk

Chant is used with these nouns as the object:
prayer, slogan, word