If you've seen Keith Richards's name pop up on the Internet recently—like last week, when he said rap is for "tone-deaf people"—it's for good reason. Fresh off a Rolling Stones tour to support a reissue of 1971's Sticky Fingers, the 71-year-old guitar icon is releasing a new solo album, Crosseyed Heart, his first since 1992's Main Offender. Why? "I was itching to get back into the studio and cut a