Early metal bands drew inspiration from the netherworld, but on the fifth album from Chicago hard-rock band Disturbed, all the demons live within. "Now if I am to survive/The infection must die," howls David Draiman on the chorus of "Infection," just one of Asylum's grim, grinding paeans to pain. The music is appropriately bleak: "Warrior" works a mean, thrashing groove and "Crucified" threads an eerie, snakelike melody through drill-press riffs. Draiman's vocals split the difference between post-grunge-baritone croon and tortured, acid-gargling howl — a kind of leather-clad Jekyll-and-Hyde routine. But where many of their peers settle for a few blocky chords and let the distortion pedal do the rest, Disturbed don't shy away from a few fevered fret-board workouts. As history has proven, the devil — wherever he lives — loves a good guitar solo.

“1999”

“I don’t consider myself a great poet,” Prince told Rolling Stone. “I just know I’m here to say what’s on my mind.” In the case of the apocalyptic party anthem “1999,” he was worried about then-president Ronald Reagan’s foreign policies. The song’s melody is based on a riff borrowed from the Mamas and Papas’ “Monday, Monday,” and Prince originally envisioned the first verse with three-part harmony but later split the vocals between himself and members of the Revolution. Because Warner Bros., with whom Prince was locked in a contractual battle, owned the original’s masters, Prince rerecorded the song and appropriately released that version in 1999.