По какому поводу могла собраться такая достойнейшая тусовка?

Touring Band:
Alice Cooper – vocals
Joe Perry – guitar
Johnny Depp – guitar
Tommy Henriksen-guitar,vocals
Duff McKagan – bass
Matt Sorum – drums

Session Musicians:
Alice Cooper – vocals, harmonica, backing vocals
Johnny Depp – guitar, backing vocals, keyboard
Dennis Dunaway – bass
Bob Ezrin – piano, keyboard, backing vocals
Perry Farrell – vocals, backing vocals
Dave Grohl – drums
Tommy Henriksen – guitar, backing vocals, programming
Brian Johnson– vocals
Charlie Judge – keyboard
Robby Krieger – guitar
Abe Laboriel Jr. – drums, backing vocals
Paul McCartney – vocals, piano, bass
Orianthi – guitar
Joe Perry – guitar
Slash – guitar
Neil Smith – drums
Glen Sobel – drums
Zak Starkey – drums
Joe Walsh – guitar
Kip Winger – bass guitar
Duff McKagan – bass guitar
Bruce Witkin – guitar, bass guitar, keyboard, piano