https://en.wikipedia.org/wiki/Tin_Pan_Alley https://en.wikipedia.org/wiki/Tin_Pan_Alley You dare not whistle a tune before it had been published, lest someone

https://en.wikipedia.org/wiki/Tin_Pan_Alley https://en.wikipedia.org/wiki/Tin_Pan_Alley You dare not whistle a tune before it had been published, lest someone steal it.