Read something about there being a music concert afterwards & that was
the reason for the huge crowd. (probably just a dig at Obama)

No, that's not correct, the crowd went home after his speech, they only came to see him. It's true that there was a band playing before he spoke, but that was only arranged to entertain people until he arrived.

But it's true that they gave him a welcome as if he was a rock star...

Kirsten