I must admit... I think my dad used to put a lot of people in a session out, sometimes by playing the accordion but most the time by being able to drown out instruments with the sheer power of his voice... not saying it was right but he still gained a great audience response :s

I always remember the way my granddad stopped a session or 2 in the 80s with his highland bagpipes (but they really enjoyed that too :D )

But I am so glad that my name isn't Hugh too :s Houston is so much nicer ;p lol