Tolong jelaskan mengenai "Head Crusher" - Megadeth dari Penghargaan Grammy ke-52

Best Rock Instrumental Performance"A Day in the Life" - Jeff Beck "Warped Sister" - Booker T. Jones

"Playing With Fire" - Brad Paisley

"Mr. Surfer Goes Jazzin'" - Brian Setzer Orchestra

"Now We Run" - Steve Vai

Best Rock Song"Use Somebody" - Kings of LeonCaleb Followill, Jared Followill, Matthew Followill & Nathan Followill, songwriters "The Fixer" - Pearl Jam

Matt Cameron, Stone Gossard, Mike McCready & Eddie Vedder, songwriters

"I'll Go Crazy If I Don't Go Crazy Tonight" - U2

Bono, Adam Clayton, The Edge & Larry Mullen Jr., songwriters

"21 Guns" - Green Day

Billie Joe Armstrong, Mike Dirnt & Tré Cool, songwriters

"Working on a Dream" - Bruce Springsteen

Best Rock Album21st Century Breakdown - Green Day Black Ice - AC/DC

Live from Madison Square Garden - Eric Clapton & Steve Winwood

Big Whiskey and the GrooGrux King - Dave Matthews Band

No Line on the Horizon - U2