tUnE-yArDs is Merrill Garbus, on loopstation, drums, ukelele, and earth-scorching, soulful vocals.
I felt sorry for Jamie Stewart, there would have been no way for Xiu Xiu to top what we had just seen here, short of acting out on the impulses which propel his quite extreme images in his lyrics...no fault of their own, but kudos to him for having her on board on tour to co-headline...even if he was Buzzcocks to her Joy Division.
Real Live Flesh / You Yes You / Fiya / Powa / Gangsta / Hatari
hippiefromhell67(480p, iPhone3GS vertical, 2nd row):
Powa > Gangsta
There's also streaming video of 4AD 'sessions' here: http://www.4ad.com/sessions/001/ This should give you a further taste of things...