An interview with The Walker Brothers signals potential differences.
Gary Walker: "Pop backwards spells MONEY."
John Walker: "Pop backwards spells POP."
Scott Walker: "I'm in it [the pop music business] for different things. I'm really not in it for the money, I don't care about money, which sounds ridiculous but actually I don't. I'm in it from a strictly creative point of view. If I can do records and...erm...produce records, write music...".