Apparently, they've been making an album and doing performances together for the past year, with an album being released real soon: http://www.monkeyjourneytothewest.com/
Saw Journey to the West at the Royal Opera House a couple of weeks back. Big spectacle, but compared to the tales themselves (or even the tv-series ;) ) it lost a lot of the deep spiritual stuff
A bit like watching a film of an Alan Moore comic :)
There is art. There is high-concept art. And then there is Gorillaz. These guys are fucking great; like a Damien Hirst without all the art scene bullshit.
I also saw it at the ROH a couple of weeks ago. It was a lot less Gorillaz and a lot more Chinese State Circus. The Jamie Hewlett design stuff was great, the Damon Albarn music a little less memorable, the acrobatics stunning, the endless curtain calls bum-numbing. We went to a matinee where there were too many idiot parents who thought a 2 hour musical in Mandarin with surtitles was suitable fare for 5 year old Thomas and Jacinta. A guy on the end of our row eventually told the mother behind us who was explaining everything to her darling 5 yr old to shut up.