I'm with Leadfingers on that. I approached the landlord of my local recently with a proposal to try out an acoustic session in the bar on a Sunday night - no money involved. He thought it was a great idea and we'll be going ahead with it in a fortnight's time. From his perspective, it's a reasonable deal: no money to pay musicians, and music to draw in the punters on a what is often a quiet evening. The musicians get a venue to play together for free. Let's see what happens.