At the 2012 Decibel Festival’s Optical 4 showcase at Broadway Performance Hall, Seattle/Portland group Orcas (Rafael Anton Irisarri, Benoît Pioulard, and Kelly Wyse) had serious technical difficulties that prevented them from playing their set. So Sunday’s show at Triple Door—with very special guest Loscil, one of North America’s finest ambient producers—should compensate for that disappointment.

Orcas’ self-titled album on Morr Music is sylvan, David Sylvian-inflected watercolor pop of muted splendor. It’s one of the best and subtlest full-lengths from a Northwest band this year (“Standard Error” attained a coveted Best Song Ever [This Week] Line Out post, too).

You can get 50-percent off ticket if you purchased a 2012 Decibel pass or you can get in for free if you bought a ticket for Optical 4. Remember to bring your ID to the venue for these deals.