1. This Grateful Dead guitarist was one-quarter Irish on his mother's side.: Jerry Garcia
2. This country singer, famous for "I Love a Rainy Night" and "Every Which Way But Loose," was the son of Irish immigrant parents.: Eddie Rabbitt
3. He's played guitar, mandolin, and fiddle with the best, and recorded "Appalachia Waltz" with Yo-Yo Ma and Edgar Meyer.: Mark O'Connor
4. He was REO Speedwagon's lead singer during their peak of popularity in the early '80s.: Kevin Cronin
5. She is most famous for "The Morning After," the theme from The Poseidon Adventure.: Maureen McGovern
6. This baritone saxophonist collaborated with Miles Davis, Chet Baker, and Dave Brubeck, among others.: Gerry Mulligan
7. Her Number One hits include "Vision of Love," "Hero," "Emotions" and "We Belong Together.": Mariah Carey (and it's her mother who is Irish)
8. This original member of Chicago played trumpet in an Irish show band before joining his eventual group.: Lee Loughnane
9. We could hardly have a quiz on Irish Americans without mentioning KC of the Sunshine Band, who was actually born with this name.: Harry Wayne Casey
10. This long-time bassist for Guns n' Roses now is part of Velvet Revolver.
11."Jump Around" was their one big hit, from 1992.: House of Pain
12. Her hits in the 80s included "Gloria" and "Solitaire.": Laura Branigan
13. These brothers sang lead and played guitar for Creedence Clearwater Revival.: John and Tom Fogerty
14. He was the original touring bassist for the band Boston.: Fran Sheehan
15. This Irish-American crooner popularized "White Christmas.": Bing Crosby
16. She starred in the film "White Christmas" and sang "Come On-a My House," but these days is better known for her famous nephew.: Rosemary Clooney
17. His classic songs include "You're a Grand Old Flag" and "Give My Regards to Broadway.": George M. Cohan

Bonus: This Boston Irish punk band's music was featured on the soundtrack to "The Departed.": Dropkick Murphys