Doo wop is the name often used to describe vocal group harmony recordings spanning the 40s, 50s and 60s. Typically, a doo wop record would pair a slow-paced song on one side with an upbeat tune on the other side. The tone could range from very serious ballads (examples on this 18 track CD include "Why Don't You Write Me" by the Jacks and "Goodnight My Love" by Jesse Belvin with a group behind him) to complete novelty items such as "Stranded In The Jungle" by the Cadets or "Guided Missiles" by the Cuff Links. Faster tempo outings include "Remember Then" by the Earls and "Possibility" by the Crowns, and then there were many dance tunes such as "The Ookey Ook" by the Penguins.