sing for one's supper
Work for one's pay or reward, as in Entertaining visiting scientists is part of the job; you know I have to sing for my supper. This metaphoric term alludes to wandering minstrels who performed in taverns and were paid with a meal. First recorded in 1609, it gained currency with the familiar nursery rhyme, “Little Tommy Tucker, sings for his supper” (c. 1744).
Words nearby sing for one's supper
sinfonietta,
sinful,
sing,
sing a different tune,
sing along,
sing for one's supper,
sing out,
sing sing,
sing someone's praises,
sing-along,
sing.