Him and Macca had a huge fall out, something to do with royalties .
You are thinking of Night's In White Satin, Denny had left by then. Whiter Shade of Pale is Procul Harem. He was in WingsHe probably was. I am assuming from comments he was in the moody blues and I’ve heard a whiter shade of pales so I’ve heard his music if that’s what he was in