The Bay City Rollers were a Scottish pop/rock band of the 1970s. Their youthful, clean-cut image, distinctive styling featuring tartan-trimmed outfits, and cheery, sing-along pop hits helped the group become among the most popular musical acts of their time. For a relatively brief but fervent period (nicknamed "Rollermania"), they were worldwide teen idols. The group's line-up featured numerous changes over the years, but the classic line-up during its heyday included guitarists Eric Faulkner and Stuart Wood, singer Les McKeown, bassist Alan Longmuir, and drummer Derek Longmuir.