Alex and Allyson Grey will appear at Sonic Bloom’s official pre-party next month. The event will take place at Denver, CO’s Cervantes’ on April 29 and 30. The Greys will live paint and provide multi-media enhancement while An-ten-nae, Octopus Nebula, DJ Vadim, Nadis Warriors, Dr Israel, Etheric Double, Resident Anti-Hero, Miraja and Zobomaze perform. Sonic Bloom will take place in Colorado from June 24-26.