[10] After Babylon broke up, Tate performed a few shows with The Mob, but left because he was not interested in playing cover songs, he was writing his own music.

On June 20, 2012, it was announced that Queensrÿche had fired Tate, replacing him with Crimson Glory vocalist Todd La Torre.

[13] Soon after, Tate and his wife Susan (who served as the band's manager from 2005 to 2012) filed a lawsuit in a Washington court, saying that he was wrongfully terminated from the group.

"[19] On April 14, 2012, before the soundcheck for a show in São Paulo, Brazil, Tate had an argument with the other members about the firing of his family.

[16] Over the course of the band's next three shows, Wilton, Rockenfield, and Jackson felt that Tate continued to misbehave and they came "to the conclusion that they can no longer work or perform with Mr.

[24] On June 12, Tate and his wife filed a lawsuit in a Seattle court against his former bandmates, claiming that he was illegally fired from the band.

[15] The statement announced that Tate had sold the brand Queensrÿche to Rockenfield, Wilton and Jackson, who together with La Torre and Lundgren are to be "the sole band recording and touring as Queensryche", while former vocalist Tate solely has the right to play Operation: Mindcrime and Operation: Mindcrime II in their entirety "in unique performances".

[28] The lineup would originally feature Rudy Sarzo, Bobby Blotzer, Glen Drover,[29] and two of his former bandmates from the band Myth, Kelly Gray and Randy Gane.

[31] With this lineup, Tate released the album Frequency Unknown under the Queensryche name on April 23 via Deadline Music, a sub-label of Cleopatra Records.

[32][33] It was co-written, produced and mixed in 6 weeks by Jason Slater[34] and mastered by Maor Appelbaum,[35] but Billy Sherwood was later hired to remix the album, "[as it] seems there are sonic issues with the previous versions".

In 2015, John Moyer, Brian Tichy, and Scott Moughton became full-time members following the departures of both Sarzo brothers.

[6] Together with Resurrection (2016) and The New Reality (2017), it forms a concept album trilogy about virtual currencies, internet banking and stock trading.

Around this time, he shaved his long hair, in solidarity with a close family member who was battling cancer until her death.

[44] On November 6, 2012, Tate released his second solo record on InsideOut Music, entitled Kings and Thieves.

[49] Since 2012, Tate has attracted some controversy, mostly in part to the circumstances surrounding the split with Queensrÿche (when his bandmates, guitarist Michael Wilton, bassist Eddie Jackson and drummer Scott Rockenfield fired him from the band and replaced him with then-Crimson Glory vocalist Todd La Torre[50]).

Tate attracted negative attention for spitting on and physically assaulting Wilton and Rockenfield before and during a show in São Paulo, Brazil, on April 14, 2012.

[16] During the "Operation: Mindcrime Anniversary Tour", ten minutes into a show in St. Charles, Illinois, on May 17, 2013, Tate grabbed an audience member's smartphone, turned around, and threw it over his shoulder into the crowd.

[51] On the subject, Tate commented: "Some actions that I have become very normal with as a performer are getting scrutinized and manipulated to paint a picture of me [to make me look like a bad guy].

[49] Tate has three daughters, Sabra, Isabella and Emily who recently changed her name to Angel and one stepdaughter, Miranda.

[56] Guitarist Parker Lundgren joined the band of Tate's solo project in the summer of 2008,[57] while dating Miranda.

[61] Daughter Emily sang a duet with her father on the song "Home Again" on the 2009 Queensrÿche album American Soldier and the ensuing tour, at age 12.

In 2013, Miranda and Emily sang backing vocals on a re-recording of "Silent Lucidity" for the album Frequency Unknown.