In 2008, Tench became part of a supergroup, initially named The Scrolls, now officially known as Works Progress Administration (W.P.A.). The band is composed of Tench, Sean Watkins (guitar), Sara Watkins (fiddle), Glen Phillips (guitar, vocals), Luke Bulla (fiddle), Greg Leisz (various), Pete Thomas (drums), and Davey Faragher (bass). The group released a self-titled album in September 2009. Tench penned one of the songs on the album, named "The Price," sung by Sara Watkins and himself.