Aussie pop duo Air Supply owned Adult Contemporary radio in the early ’80s. The soft rockers ushered in the “decade of decadence” by bringing all things deliciously over-the-top to the power ballad: infectious hooks, gigantic, lush orchestrations, and of course the infamous, final-chorus key change. Add Graham Russell’s sensitive vocals and Russell Hitchcock’s soaring tenor to the mix and there you have a formula for massive worldwide success.