So many times I've heard "All musicians want to be stand-up comedians, and all stand-up comedians want to be musicians." Of course, its not always the case, but there are examples. Or those who were poets but couldn't make it that way, so they combined music to make it more accessible. I remember Mort Sahl saying he always wanted to be a writer, but that it was hard to become established and said how anyone could get on an open-mic type of situation, and that he would reveal what was on his mind, using humor.
There's two types. Those who actually had the talent to be what they intended to be, and those who didn't, or in the least, would use the money they made with the artistic medium they settled for to further a different career; sometimes with success, many times without success. Some achieved that success after death, sometimes only because of the fanatics who buy-in and think because their hero was great at one thing, that they could do no wrong. Also after someone dies, you know they can't create anymore, so you look for anything other than what you knew them for. Jim Morrison comes to mind. He never sang before, and wanted to be a successful poet and filmmaker.
There's two types. Those who actually had the talent to be what they intended to be, and those who didn't, or in the least, would use the money they made with the artistic medium they settled for to further a different career; sometimes with success, many times without success. Some achieved that success after death, sometimes only because of the fanatics who buy-in and think because their hero was great at one thing, that they could do no wrong. Also after someone dies, you know they can't create anymore, so you look for anything other than what you knew them for. Jim Morrison comes to mind. He never sang before, and wanted to be a successful poet and filmmaker.