Jaywalkers - Ain't Nobody's Business

The 'last song' of the evening by Jaywalkers at Green Note on 13 June 2024. They are Jay Bradbury on lead vocals and fiddle, Lucy Williams on double bass and Michael Giverin on mandolin. Michael introduced this as 'an old jazz standard' and at first I thought it was a cover of the Billie Holiday song. However the lyrics are different, so I'm confused. Which is just my normal state of mind.