More to come but only those are on Youtube right now, will edit as they come out on Youtube.
I guess this is the list of performers: "2AM, 2PM,8eight, Brown Eyed Girls, C.N. Blue, KARA, Kim Tae Woo. MBlaq, One Two, SeeYa, SG Wannabe,Son Ho Young, T-ara,U-Kiss,Child of Empire, Dae Guk Nam Ah." (source)
note: it's the broadcast from the concert in April 6th, if i guess right.
note 2: link for KARA's perf; cause the video doesn't want to be embed D8
Brown Eyed Girls - Abracadabra
Secret - Break Time + Magic
SeeYa - His voice
T-Ara - Crazy because of you + Time to love 2
2AM - Even if I die I can't send you
2AM, 2PM, Kim Taewoo - One Candle
MBLAQ - Oh Yeah
CN Blue - I'm a loner
U-Kiss - Intro + Bingeul Bingeul
2PM MC Cut
ZE:A - All day long
Credits: TheAMFSandy6 + YoonAOnly + berryzssss + 6xrauren + Pruksakanond + yunchikan @ YouTube
So many performers is a present, good job Mnet.