Apologies for being contrary, but The Levellers are decidedly awful, in my opinion.

I've heard them a few times at various festivals, and simply don't enjoy the anthemic, 'punch the air' style of their music. But that's just my taste (or lack of it).

However, most people I know agree that the 'vibe' gets a bit nastier when they play at major festivals (Cambridge etc).

Not for me...