Conversation so far:
What kind of experimentation did Queensrÿche do?
Tate has described Q2K as a continuation of the experimentation of Hear in the Now Frontier.
What is Queensrÿche's continued experimentation?
Musically, Q2K bore little resemblance to the progressive metal of the band's past, and also displayed a similar stripped-down sound as Hear in the Now Frontier.
Is continued experimentation the name of the Queensrÿche album?
Queensrÿche recorded one studio album with Gray, Q2K from 1999, which was also the first album for their new label, Atlantic Records.

Question: What kind of experimentation were they doing?
Self-contained rewrite: What kind of experimentation were Queensrÿche doing?