thanx for the reports!
so, that asian crowd sounds like the crowds at the boyband concerts i've been to when i was a teenager. that effect you describe is indeed interesting, i've been thinking that for a while, that pushy crowds may be uncomfortable, but the energy is a lot higher. though i think not the pushing is the reason for the higher energy, but vice versa... people just let go of all of their manners, because they're so super-excited - but that's exactly what extremely heats up the atmosphere at a concert.