The Foo Fighters’ Sonic Highways came out today, and we finally know which song they collaborated on with Joan: she plays guitar on “I Am A River.”

Alternative Nation has the full listing of performers, cities, and studios that the Foos recorded this epic adventure in:

Guest performers:
Rick Nielsen – baritone guitar on “Something from Nothing”
Zac Brown – guitar, backing vocals on “Congregation”
Gary Clark, Jr. – guitar on “What Did I Do? / God As My Witness”
Joe Walsh – guitar on “Outside”
New Orleans Preservation Hall Jazz Band – alto saxophone, drums, piano, trombone, trumpet, tuba on “In the Clear”
Ben Gibbard – guitar, vocals on “Subterranean”
Joan Jett – guitar on “I Am a River”.

Locations and studios:
Something From Nothing – Chicago, IL – Electrical Audio Studio
Feast And The Famine – Washington, DC – Inner Ear Studio
Congregation – Nashville, TN – Southern Ground Studio
What Did I Do/God As My Witness – Austin, TX – Think this was recorded at the Austin City Limits Studio or the KLRU Studio.
Outside – Los Angeles, CA – Rancho De La Luna Studio
In The Clear – New Orleans, LA – New Orleans Preservation Hall
Subterranean – Seattle, WA – Robert Lang Studio
I Am A River – New York, NY – The Magic Shop New York Studio