Longest concert

Went to T Music Festival with friends.
It was the longest and imperfect concert.
The whole stadium was blackout suddenly
during Chin's performance.
Everyone were shock of it ~~
It was surprised !
No electric.. No sound .. No performance..
Shall we back ?
Ha ha. . . Surprisingly everyone were there!
Some artists had to come out sing a short verse
through the loudspeaker.
WTH ... Those sit at the upstairs really can't hear it.
The performance is continues after the main power cable was fit.
The 5 hours long marathon concert became 7 hours.
This was te longest concert that I never attended before.