The Foo Fighters have a new best friend, and it is someone you wouldn't have expected.
During their performance at Summer Sonic Festival in Japan, Dave Grohl took a moment to introduce their new mate, Rick Astley, who he only met "two minutes ago", on to the stage to play - you guessed it - his biggest hit and most famous internet troll song, Never Gonna Give You Up.
Astley came in v. hot, screaming "COME ON YOU MOTHERFUCKERS!" before they got into a beefed up cover of the song.
Foo Fighters are set to release their new album, Concrete and Gold, this September 15th.