We may have to wait until next year for Behemoth to release their new album, The Satanist. However, that isn’t stopping Nergal and the gang from performing new material off of their long-awaited follow up to 2009′s Evangelion. During their set at last night’s Brutal Assault festival in Jaromer, CZE, Behemoth treated fans to a new song supposedly titled ”Blow Your Trumpet Gabriel.” The band reportedly also performed the new song the day prior (August 9)at the Getaway Rock festival in Gävle, Sweden. Unsurprisingly, fan filmed footage of them performing the song at Brutal Assault has already made its way onto the web and can be seen above. The audio quality is a little rough, but we certainly like what we hear so far. Listen for yourself in the video above.