Bruce Springsteen, Neil Young, Dave Grohl, Chris Martin of Coldplay and Slash have all donated autographed items to MusiCares Charity Relief Auction.
The charity fundraiser is slated to take place on February 2nd at the Recording Academy in Santa Monica, California, and online at JuliansAuctions.com.
Springsteen, Young, Grohl, Slash, Billie Eilish, Billy Joel, Steve Miller, James Taylor and Dee Snider of Twisted Sister have all contributed autographed guitars.
Paul McCartney, Jon Bon Jovi, Brandi Carlile, Eagles and Sheryl Crow all signed a guitar used at last year's Keep the Party Going: A Tribute to Jimmy Buffett that's also up for bids.
There's also a guitar used at the Rock and Roll Hall of Fame induction ceremony signed by Ozzy Osbourne, Maynard James Keenan of Tool, Billy Idol and Wolfgang Van Halen.
Chris Martin donated a handwritten setlist from a Coldplay show in Dublin last year.
Other autographed items up for bids come from Ringo Starr, Sting and Stevie Nicks.