Conversation so far:
What is Queensrÿche's mindcrime?
Operation: Mindcrime is the third studio album by the American progressive metal band Queensrÿche.
Was Queensrÿche's mindcrime a successful album?
The album was certified by the RIAA as 'gold' a year after its release, and it was certified as 'platinum' in 1991.

Question: Can you tell me a little about the Empire and mainstream success?
Self-contained rewrite: Can you tell me a little about the Queensrÿche's Empire and mainstream success?