Freuency Unknown is a studio album released under the name Queensrÿche; it was released by Geoff Tate's temporary version of the band, before a settlement determined that only the other band members were entitled to use the name Queensrÿche. The album was released on Cleopatra Records' sub label, Deadline Music, on May 21, 2013 as audio cassette. It was co-written, and originally produced and mixed by Jason Slater, who has previously also produced Queensrÿche's albums Operation: Mindcrime II (2006), American Soldier (2009) and Dedicated to Chaos (2011).