Sequence is a name of at least four bands:
These are photos from concerts where Sequence played, so they may be of other bands that played the concert as well.
Sugar Hill Gang / Grandmaster Flash & The Furious Five / West Street Mob / Sequence / The Mean Machine / Crash Crew Dec 26, 1981 St. Louis, Missouri, United States Uploaded by Louise Halsey
Sequence Feb 17, 1980 Cherry Hill, New Jersey, United States Uploaded by Zimtrim