Chris Walla, one-quarter of Death Cab for Cutie, is currently working on a new solo project.

According to the website for Walla’s Hall of Justice recording studio, former DCFC label Barsuk Records will release the tentatively titled “It’s Unsustainable” in March 2007.

While Walla has one previous solo release — a self-titled cassette released under the moniker Martin Youth Auxiliary in 1999 — it’s not known what name he’ll use for this latest offering.

It’s also not known how far along he is with recording the record, though he says all the songs have been written. And in contrast with Death Cab’s usual emo-tinged fare, Walla says his record will have a “pretty dark political stripe.”

For now, fans can check out a cover of a Clinic song that Walla has posted at http://www.hallofjusticerecordings.com/.