I was wondering , do music stars like David Gilmour , Phil Collins (etc.) 
rehearse each rehearsal with their band ( not the original band , but their band - for example : David Gilmour doesn't perform with the Pink Floyd but his own band).

**Question**

Do they rehearse themselves each rehearsal with their band - or there is some kind of "my music/studio manager" which actually do the rehearsals and then David joins in to the last couple of rehearsals ?