Rock singer has a daughter with his groupie he didn’t know, the girl singing Summertime in his studio
Was he Jeff Bridges? He is a rock star with a young daughter to a hroupie, druggie, I believe in Terry Gilliams Tideland. Possibly not this I cant remember if it has the song featured that you mentioned. Cant remember the film that well.
Forget that check out Janie Jones (2010) with Abigail Breslin, that has the song mentioned!!