Sirius Satellite Radio Canada has signed on as the presenting sponsor of the 2009 Polaris Music Prize. Sirius has been a supporting sponsor of the prize since 2007. The Polaris Music Prize recognizes and markets albums representing "the highest artistic integrity" as judged by a panel of music critics. The 2009 prize will be awarded on Sept. 21. "With their unwavering support for Canadian talent in general and specifically the Polaris Music Prize, we feel having Sirius as our number one sponsor is not only a natural progression but a perfect fit," said Steve Jordan, executive director of the organization.