The frontman also sent a photo to cancer-stricken Ken Powell
Kaiser Chiefs and Hozier had already been confirmed as supports for the Slane Castle gig
First series of HBO show charted recording of the band's latest studio album in various different US studios
The artists teamed up on hardcore track 'Came Without Warning' in Adelaide, Australia
Unreleased track 'Empty Handed' will also feature on the four track release
Fan had written request on a sign prior to Sydney gig
Johnny Depp watches Foo Fighters kick off Australian run of Sonic Highways World Tour in Brisbane Tickets
Band beat the storms to play at 40,000 capacity Suncorp Stadium
The HBO series will be released physically in April
Emily Eavis says Florence + The Machine could join 'special' Foo Fighters as Glastonbury headliners Tickets
Glastonbury organiser calls Foo Fighters 'an incredible live force'
Foo Fighters cancel Auckland gig after equipment damaged and crew member injured in accident Tickets
Band will resume live shows when replacement equipment arrives from Los Angeles
US band are first headliner to be confirmed for 2015 festival
Grohl said 'power of record store to inspire is still alive'
It's lifted from Nate Mendel's upcoming release 'If I Kill This Thing We're All Going To Eat For A Week'
Band perform a nine-song set
Radio 1 censured by Ofcom for broadcasting 'offensive' Foo Fighters track during breakfast show Tickets
Track 'Something From Nothing' containing two swear words was broadcast in November
Band played two-and-a-half hour set that included four covers
The former Sunny Day Real Estate member has debuted the song 'Believe The Squalor'
Dave Grohl tells crowd: "OK, we got a new Foo Fighters song"
The band played a surprise show at the LA Forum for Dave Grohl's 46th birthday