Dennen has been a part of The Mosaic Project, a San Francisco Bay Area-based nonprofit organization, since its inception.
The Children's Songs for Peace and a Better World album is a compilation of songs written and performed by members of the Mosaic Project, including Brett Dennen.
Manhattan Project | Project Runway | Project Mercury | mosaic | Human Genome Project | The Blair Witch Project | Project Gemini | Project Greenlight | Mosaic | Project Nike | Project Blue Book | Federal Art Project | Project Orion | Men's Recovery Project | Eden Project | World Justice Project | Wounded Warrior Project | The Octopus Project | The Alan Parsons Project | Project Xanadu | Mosaic (web browser) | Gotan Project | German nuclear energy project | Tony Hawk's Project 8 | The Spamhaus Project | The Mindy Project | Project Pluto | Project management | project management | Project Grudge |
In 2011 The Mosaic Project, her fifth album overall and her first on Concord Jazz, which featured a number of singers including Shea Rose, was released in 2011.