Click to listen to Johnny Cash's "Get Rhythm"

Even as a young turk, Johnny Cash sang with the voice of experience. The first disc of this fantastic two-CD set (which features 26 cuts previously unreleased in the U.S.) gives us the sound of Cash in his twenties – demos and radio appearances from the 1950s. Cash's singing is higher and sprier than in his prime, but the gravitas is there. (Check out the demo of a little ditty called "I Walk the Line.") Disc Two turns to outtakes and rarities from the 1960s. There are jailhouse weepers, lullabies and gallows humor like "Five Minutes to Live" – a jaw-dropping testament to the depth of the man's songbook.

Photos: Intimate, All-Access Shots of Johnny Cash

“Jimbrowski”

Jungle Brothers sampled, among other things, jazz, James Brown and house music. The New York crew's lyrics were equally diverse but never short on clever wordplay or a playful sense of humor, as exemplified by this song from 1988's Straight Out the Jungle. "The idea for that came at the end of a studio session, with Mike, me, Red Alert and a woman Red was dating at the time," says the group’s Afrika Baby Bam. "Red was flirting with her and kept saying 'Jimbrowski' the whole night. Mike and I wrote the rhymes on the way back from the subway."