Artists you recognise as talented, but who produce rubbish music
Norah Jones: The voice is a thing of beauty, her songs aren't... (see also Joss Stone)
The Guitarist from the Darkness: This dude can play, so why the utter crapness of his band? His space monket brother?
Sting: Some of the greatest pop songs ever from 77-85. Solo Career. Oh. Dear.