Sing for your supper

Sing for your supper
And you'll get breakfast
Songbirds always eat
If their song is sweet to hear
Sing for your luncheon
And you'll get dinner
Dine with wine of choice
If romance is in your voice
I heard from a wise canary
Trilling makes a fellow willing
So, little swallow, swallow now
Now is the time to
Sing for your supper
And you'll get breakfast
Songbirds are not dumb
They don't buy a crumb of bread it's said
So sing and you'll be fed