Look up Emitt Rhodes.

He's kind of diamond in the rough singer songwriter from the 60s-70s who was called the "One-Man Beatles" because he his similar style to some of their stuff. I think he only put out one eponymous album before getting totally fucked over by his record label and quitting the music buisness. But that one album is great. He played, wrote, and produced the whole thing by himself.

Edit: Has a couple other albums, and then a 43 year hiatus in making another one ha.