There are several artists and bands with this name:
These are photos from concerts where Plan B played, so they may be of other bands that played the concert as well.
Bumbershoot 2004 Sep 3 - 6, 2004 Seattle, Washington, United States Uploaded by Derik
Mononc' Serge & Anonymus / Downstairs / Plan B / Les Mauvaises Herbes / President’s Choice May 22, 2004 Boucherville, Quebec, Canada Uploaded by Doctor Phibes