Alice Cooper has joined Foo Fighters onstage, Digital Spy reports.
The singer performed his hits 'School's Out' and 'I'm Eighteen' with the band during Dave Grohl's birthday concert for charity January 10 night.
The show took place in Los Angeles and raised money for Rock School Scholarship Fund, MusiCares and Sweet Relief.
Other guests performers at the show included David Lee Roth, Trombone Shorty, Joe Walsh, Jane Addiction's Perry Farrell, Zakk Wylde, Queens of the Stone Age's Nick Oliveri, Slash, Jack Black and Kyle Gass of Tenacious D, and Paul Stanley.
Grohl recently said that Foo Fighters' recent album Sonic Highways was "misunderstood".
The singer also revealed that he almost collaborated with David Bowie and Prince.