The Tracey Ullman Show was a weekly American television variety show, hosted by British comedian and one-time pop singer Tracey Ullman. It debuted on April 5, 1987 as the FOX network's second primetime series and ran until May 26, 1990. The show featured sketch comedy along with many musical numbers, featuring Emmy Award-winning choreography by Paula Abdul.
The Simpsons first appeared as short vignettes on the Tracey Ullman Show. These cartoon shorts acted as bumpers that are shown before and after commercials. The shorts were written by Matt Groening and animated at Klasky-Csupo by a team consisting of David Silverman, Bill Kopp and Wes Archer (in the later seasons, the shorts were animated by Silverman and Archer) Dan Castellaneta, Nancy Cartwright, Yeardley Smith and Julie Kavner provided the voices of characters Homer Simpson, Bart Simpson, Lisa Simpson, and Marge Simpson.
The characters were crudely drawn because Matt Groening assumed that the animators would clean them up after he submitted the rough sketches to them. Instead, the animators simply traced over the sketches.