True Jerry, many just vanished when they tried for a solo career and certainly Clyde McPhatter did not get the solo career that he deserved , although he did have a few hits after leaving The Drifters .Another exception to the rule was Ben E.King, who did alright for himself after The Drifters.
I often wondered what became of Jimmy Beaumont of The Skyliners, now there was a singer, at least on "Since I don't have you" .