Atlanta rapper T.I. is the latest Southern hip-hop artist to get the "chopped and screwed" treatment. (Lil Wayne is another.) It means that superstar DJ Paul Wall takes the original tracks, slows them way down, chops them up into new creations and comes out with perfect party music for Houston thugs bouncing off the walls from too much cough syrup. Since T.I.'s raps are more noteworthy than his beats in the first place, his late-2004 hit Urban Legend is supremely screwable. Wall, of the Swisha House crew, is the real star of the album, turning T.I. songs such as "Bring 'Em Out," "Asap" and "The King" into woozy post-dub trips more fun than the originals. It's funk NyQuil: slowed, throwed and fit to explode.

“Is It True”

As the British Invasion reached its peak in 1964, Brenda Lee went from Nashville to London to record one of her hardest-rocking hits, her perky vocal backed by a stuttering, squalling guitar. That guitar was played by session musician Jimmy Page, yet to skyrocket to fame with first the Yardbirds and then Led Zeppelin. "She said to me, 'I've come here to make a record with the British sound,'" remembered producer Mickie Most. "She felt she wouldn't get the same sound in Nashville because they're only just catching up on the British beat group sound of about six months ago."