The seventh studio album from alternative rockers the Foo Fighters,according to a post on the band's Twitter page, is finished. "Ladies and gentlemen, we are officially done," the post reads. The album, which has not yet been titled, will feature 11 tracks and be released some time in the spring. Frontman Dave Grohl's old Nirvana bandmate, bassist Krist Novoselic will guest on the album, which was also recorded by famed Nirvana producer Butch Vig.Check out the photo below of the band and crew celebrating the end of the recording process.