"Here It Is Christmastime" by Kevin Bacon and the Old 97s Kevin Bacon appears as himself in "The Guardians of the Galaxy Holiday Special," where he also lends his vocal talents. He recorded "Here It Is Christmastime" with the song's band, the Old 97s. They also have a satirical Christmas song, "I Don't Know What Christmas Is (But Christmastime Is Here)" at the beginning of the film.