The trailblazing post-punk band The Raincoats plays at Comet Ping Pong on Sept. 17 as part of a North American tour supporting the reissue of its 1981 album Odyshape. (Sonic Youth‘s Kim Gordon wrote the liner notes to this new version.) Exciting as The Raincoats is by itself, Comet booker Sasha Lord emailed Arts Desk late last week announcing that Felt Letters, the experimental trio fronted by Ian Svenonius has been added as an opening act to the show.

Felt Letters’ sole release on M’Lady’s Records was the January 2010 single “600,000 Bands.” But earlier this summer, the band, which also includes Tom Bunnell and Fugazi‘s Brendan Canty, uploaded several tracks to the YouTube page of Chain and the Gang, the most public of Svenonius’ current bands. A Felt Letters show is a rare sight, but with tracks like “600,000 Bands,” “Who U Lookin’ At (Like That)?” and “Island Life,” the band is also Svenonius at his most philosophical and mysterious.

The Raincoats perform with Felt Letters and Grass Widow at 10:30 p.m. Sept. 17 at Comet Ping Pong, 5037 Connecticut Ave. NW. $20. Tickets here.