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.
The double-disc collection Neil Sedaka Sings the Hits is a comprehensive chronicle of Sedaka's hit-making stint at RCA, from his first hit in 1958 (The Diary) to his last recordings for the label in the late '60s.
Track listing.  1 I Love the Way You Love Me (Shaw, Cannon) â 3:48.  2 Grease Medley (Grease by Barry Gibb; Greased Lightnin' by Jim Jacobs and Warren Casey; Summer Nights by Jim Jacobs and Warren Casey; You're the One That I Want by John Farrar) (Live from Wembley) â 10:13.  3 No Matter What (Andrew Lloyd Webber, Jim Steinman) (Live from Wembley) â 5:17.