Youth Lagoon made a small, quiet wave with 2011 debut “The Year of Hibernation.”

Trevor Powers, the man behind the music, showed off his knack for building up quiet songs into sprawling jams.

“Mute,” his second peek at upcoming album “Wondrous Bughouse,” proves that Powers is better than anyone thought. Instead of building to an epic climax, “Mute” starts off big and somehow, inexplicably, gets bigger.

This track and “Dropla,” the other taste of “Bughouse,” are longer and grander than anything Youth Lagoon has released thus far. It’s an unexpected turn, as “Hibernation” leaned toward a chill-wave, dancy style, but Powers’ vocals in “Mute” aren’t a far throw from Sigur Rós’ Jónsi.

Youth Lagoon kind of sounds like Sigur Rós on “Mute,” packing beautiful, abstract sound and soaring vocals that leave you breathless.