Maybe we've just been going to wrong gigs, but most of the time, a 'secret special guest' turns out to be someone who only 10 people in the audience have heard of. If anything, the opposite is true of this gig, the latest an occasional concert series organised by Metropolis writer Dan Grunebaum. 'Rock Chick's Revenge (Rock Gods Must Die)' (to give it its full name) invites five female-focused acts to do their thing, although they're going to have a hard time competing with the evening's special guests, Blue Man Group. Yeah, those guys. That's not to say that the rest of the lineup doesn't look intriguing, ranging as it does from the ass-kicking rock of Nagoya's Jonny and The Cold Tommy to Elsie's deadpan industrial-electro diva schtick. What's more, all proceeds will be going to support the quake relief work of Peace Boat. Good stuff.