The Bee Gees were originally a singing trio of brothers — Barry, Robin, and Maurice Gibb. The trio were successful for most of their forty years of recording music, but they had two distinct periods of exceptional success: as a harmonic "soft rock" act in the late 1960s and early 1970s, and as the foremost stars of the disco music era in the late 1970s. The group sang three-part tight harmonies that were instantly recognizable; brother Robin's clear vibrato lead was a hallmark of their earlier hits, while Barry's R&B falsetto became a signature sound during the disco years. The three brothers co-wrote most of their own hits, as well as writing and producing several major hits for other artists.
In "The Best Christmas Story Never", Roger (in the guise of Roger Epstein) has become so successful as a producer of disco acts at his Roger Epstein Music company that the Bee Gees pose for him in a picture.