Jarda Petřík is a long time (10 plus years) CRo Radio Wave speaker, avid European electronic festivals attender, co-founder and co-organizer of former sleeping gigs called Silent_Night and occasional DJ under the Valsorai Koxoy alias. For already two decades of electronic scene exploration, he now mainly focuses on ambient, drone or field recordings, self called "tree house" & "technoise" subgenres from the clubby side of electronics as well as more avant-garde oriented experimental / abstract production. Besides these, you can expect regular insides into the current Czech electronic scene in Extruder as well.