Tim Hecker's brand of drone is enveloping, suffocating, all-encompassinga gorgeous blanket of laptop fuzz that engulfs the listener. Over the course of six albums, he's gone from ambient drone designer to metal-tinged blissmaster and never fails to bring the most colorful sounds to gnaw at the spectrum. Opener Grouper is a mushier affair, a ethereal songwriter who drowns her melodies in delicious tape-damaged muck and blasts of reverb. With Julianna Barwick.
Fri., Sept. 11, 8 p.m., 2009