Ch 72 is now 50s Gold. It replaces the old 50s on 5 channel.
Whereas over half the play list on 50s on 5 was really music form the sixties or even seventies, the new Fifties Gold is pure 50s music. Some of it even goes back to the early fifties pre rock and roll era.
I'm not really a fan of fifties music. Got my bellyful back in the day. But I've been listening just to see how badly they'd screw it up. Surprisingly, they got it just right.