The Pacific Northwestern ambient-music enigma, who’s been recording as Eluvium for long enough to earn veteran status, is getting set to release Nightmare Ending, the massive new double-disc album that returns him to instrumental music after experimenting with vocals on 2010’s Similes. We’ve already posted the album opener “Don’t Get Any Closer,” and now we’ve got “Envenom Mettle,” the majestically pretty and gentle drone piece that ends the first disc, which features Mark T. Smith of Explosions In The Sky on guitar. Listen to it below.

Nightmare Ending is out 5/14 on Temporary Residence.