Sorry man, I can barely remember. JAM Project played Super Robo, that one DBZ Opening everyone knows, and the OPM opening among others. TO revolution played a bunch of Gundam seed songs, Eir Aoi did a bunch of SAO stuff, Yoko Ishida did one of the Sailor Moon Ops, there were 2 duets, one of them was Eir Aoi and someone else who did God Knows.
Also Sphere, Jesus. Cutesy jpop and the suddenly one of the girls drops her fucking opera voice holy hell I did not expect that.