It has two front chainrings and ten cogs in the rear. A 3x9 has three front chainrings and nine cogs in the rear. Although bikes used to have all types of drivetrains with 5, 6, 7, or other numbers of rear cogs, were going to start our discussion with 9-speed systems.
Neil Sedaka has a long and distinguished career as a pop singer, songwriter, and pianist. His many hits include Breaking Up Is Hard To Do (1962, 1975 slower remake), Laughter In The Rain (1975), and Bad Blood (1975).
The group can be traced back to a 1990 Christmas party for students of the Minneapolis School of Anesthesia. A few of the then-students were singing various songs, one of them being Neil Sedaka's Breaking Up Is Hard To Do. When a senior student suggested that the song be sung as Waking Up Is Hard To Do, the group was formed. The group's first performance was for the graduation ceremonies of the 1991 class of the Minneapolis School of Anesthesia.