1. M.C. Hammer sampled Rick James in this song: "U Can't Touch This"
2. Bono, The Edge, Adam Clayton, Larry Mullen Jr.: U2
3. They hated "Everything About You" in 1992: Ugly Kid Joe
4. The Drifters and James Taylor both hit with this song: "Up On The Roof"
5. His first Number One hit was "Nice & Slow" from 1998: Usher
6. Gary Puckett's group: Union Gap
7. Joe Cocker and Jennifer Warnes' duet from "An Officer and a Gentleman": "Up Where We Belong"
8. British reggae group that hit with "Red Red Wine": UB40
9. Expression that follows "That's the way" and "I like it":" Uh huh, uh huh"
10. Billy Joel's ode to Christie Brinkley: "Uptown Girl"
11. He brought Dobie Grey back to the charts in 2003 with a remake of "Drift Away": Uncle Kracker
12. Charity group that included Lionel Richie, Michael Jackson, Bruce Springsteen, Bob Dylan, Ray Charles, and Stevie Wonder: USA for Africa
13. Natalie Cole's album of songs by her father: "Unforgettable, With Love"
14. Their hit was "Smiling Faces Sometimes" from 1971: Undisputed Truth
15. This Toni Braxton hit was Number One for eleven weeks in 1996" Un-Break My Heart"
16. "We're so sorry if we caused you any pain": "Uncle Albert/Admiral Halsey"
17. Todd Rundgren's band: Utopia

Bonus: A Grateful Dead favorite that begins "Blue light rain": Unbroken Chain