Hailed as the biggest band since The Beatles, the Bay City Rollers became global sensations in the mid-1970s with their bubblegum pop and tartan trousers. Learn more about their journey through stardom on this episode of Simply Scottish, another Scottish Three. Along with rollermania, we'll also look at Scottish mathematician John Napier, whose contributions to mathematics include logarithms and a more efficient system for making calculations. Finally, discover how Scotsman John Broadwood helped invent grand pianos and hear how Ludwig van Beethoven thanked the craftsman after receiving one of his instruments as a gift. All this plus music from Deacon Blue, Rory Butler, Skipinnish, and more!