The Bay City Rollers are a Scottish pop rock band known for their worldwide teen idol popularity in the 1970s. They have been called the "tartan teen sensations from Edinburgh" and are one of many acts heralded as the "biggest group since the Beatles". The group's line-up had many changes over the years, but the classic roster during its peak in popularity included guitarists Eric Faulkner and Stuart Wood, singer Les McKeown, bassist Alan Longmuir and his younger brother Derek Longmuir as drummer. The current line-up includes original guitarist Stuart "Woody" Wood, singer Ian Thomson, bassist Mikey Smith, keyboardist/singer John McLaughlin and drummer Jamie McGrory.
Their debut album, Rollin' debuted atop the UK Albums Charts and spent a combined total of fifty-eight weeks on the UK Albums Chart. Their follow album studio album Once Upon a Star continued this success, again, debuting atop the UK Albums Chart. The album yielded the successful singles "Bye, Bye, Baby", which topped the charts in the United Kingdom, Ireland and Australia, and "Keep On Dancing". "Bye, Bye, Baby" was the best selling single in the United Kingdom in 1975.