An acoustic rehearsal by Calvin Party:
[Video removed by YouTube user.]
True story: I once had a conversation with the chap in glasses while we were both having a pee at the Hebden Bridge Trades Club. In those days, his band was the rather wonderful Levellers 5. They eventually changed their name to avoid confusion with the rather more popular tree-hugging folk-rockers, The Levellers.
Yeah, I know, the pee: too much information.