Lenny Kravitz is an artist in love with the classics. He plays writhing guitar licks over a blend of rock and R&B, echoing Prince's most physical forays into carnal funk (“I'm Yours”) and Jimi Hendrix's groovy, wah-wah psych jams (“Dolly Dagger”). But don't forget his hero John Lennon: The angry, blues-rock tirade “I Found Out” presages Kravitz's own seething social commentaries.