“Finally, we get some of the finest artistic results of the awful, forced hibernation zones we all were forced to bubble ourselves into during the COVID era. It [Infinite River’s Prequel] sounds like the soundtrack to a space desert film you can’t wait to watch. There are so many of the sounds you already like that might come from guitars and drone elements, but it’s subtly put together here in ways that remove all sense of ego. These are sort of slowed-down post-rock songs, but it’s not overly interested in math, and it is way too cosmic to be post-rock. Sorry we even said ‘post-rock.’ “These perfect, first instrumental recordings here were made in a home studio in Birmingham, Michigan by three longtime friends and compatriots who were slowly starting to go nuts as lockdown started. Later, another friend shuttering in place in the U.P. added percussion elements. ‘All our friends were doing yoga, so we made this yoga music for them,’ Gretchen Davidson explains half-seriously. But this music contains multitudes. It exists in a curious space between improvised music and subtle songs that fall apart the closer you get to them. There is a lot of space in between these notes. “No one will call this a ‘Detroit supergroup,’ and we implore you to follow suit. However, the group curiously brings together disparate yet friendly threads of the fertile Detroit underground: garage, weirdo indie, and the noise scene—from its very top practitioners, no less. Gretchen Davidson (Slumber Party, Terror...