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David Letterman tapes his last Late Show today, and his last musical guest is his favorite band: the Foo Fighters.

The show doesn’t air until tonight, so its guests were supposed to remain a secret (oh yeah—spoiler alert!), but Rolling Stone reports that the band, which has appeared on the show several times, will make one last showing before Letterman goes off the air.

The Foos and the late-night legend go way back: They were the first band he wanted on his show after heart surgery, and they spent a week on The Late Show last year to promote their HBO miniseries, Sonic Highways. The host has said his favorite song is “Everlong,” and ever since the band played it for Letterman on his show, frontman Dave Grohl said in an October interview, “We’ve been in love.” Watch the lovefest tonight on CBS.