I'm not a big fan of this band, and this is not my favourite song of theirs, but it's one of the most popular argentine bands.
Their followers might be compared in some ways to "deadheads" (greateful dead fans) since they used to follow the band around the country to watch their shows.
I think the shots of this huge wild audience jumping and singing are really impressive...
the band is called Patricio Rey y sus Redonditos de Ricota
http://www.youtube.com/watch?v=6dg6i...layer_embedded