LAUREN NAPIER: TONIGHT AT NORTHERN IN OLY >>>

Do you dream in reverb? Grouper certainly does. The ethereal melodies created by Liz Harris echo within the venues and throughout the albums, finding a thought-provoking path to your brainwaves. The music creates an almost suspenseful air and leaves a listener unsure of how to react to the contradictory combination of the spooky and the beautiful. Harris achieved recognition beyond the obscurity of a Xiu Xiu collaboration record when the solo musician toured with and opened for Animal Collective: just another notch in this bedpost of experimental tunage. Grouper promises an undeniably spiritual musical journey as Harris’ songs of pure beauty are found to possess a creepy underlying tone. Don’t we all like to be kept guessing?

[Northern, with Desolation Wilderness, Invisible River, 9 p.m., all ages, $7, 321 Fourth Ave., Olympia, www.olympiaallages.org]