Tamara Barnett-Herrin is an English singer-songwriter, who has sung with the group Freeform Five on the album Strangest Things which was released in 2005. A later project is the Calendar Songs album, an internet-based collaborative CC BY-NC-licensed project released in early 2008. Barnett-Herrin contributed vocals to "State of Permission", an album track on Shinichi Osawa's 2007 album, The One.