After hearing a song about a friend's unexpected suicide, it makes sense to want to lighten the mood. After hearing about something so grim, a ray of hope is comforting. It's jarring, however, to slam into a blistering metal guitar track or a dance tune that's intended strictly for a party. iTunes got it right a little while ago by pairing James Taylor's "Fire And Rain" with the Barry Gibb & Alison Krauss version of "Too Much Heaven."