After being introduced into the Rock and Roll of Fame by Lenny Kravitz, Lionel Richie, the Commodores musician and American Idol judge, began the his musical medley with “Hello” on piano ... but he quickly switched the mood  - jumping  into the Commodores’ “Easy,”  with a surprise appearance by his buddy Dave Grohl.  Check out the performance below  - 

Grohl has been a longtime fan of Richie’s, the two most recently worked togeher on  Foo Fighters’ comedy-horror film Studio 666 where Richie chastised Grohl for stealing “Hello.”