The first Aerosmith album of the 21st century is light on pop hits (save the disarmingly sweet "Jaded"), but compensates with a pleasing heaviness: The super-busy title track threatens to go full nü-metal (scratching!) but never quite succumbs. Super-busyness is a theme, actually, with horns, strings, sitars, harmonicas and lotsa disembodied Steven Tyler choral action. The funk-rap vibe on "Outta Your Head" nods to the Red Hot Chili Peppers (great bassline!); if you're a power-ballad fiend, "Fly Away From Here" is your (relatively tasteful!) jam. "Trip Hoppin'" is not what you think.