The Pure Laine (Pure Wool) contest at the Pembroke Old Time Fiddling and Step Dancing Competition in Sept 2010, featuring April Verch, Shane Cook and Danny Perreault. Competitors must play tunes one after the other without losing the beat or making mistakes. They aren’t allowed to repeat any song that’s already been played. They shout out the key of the song, and the referee translates for the accompanist. It’s a long video, but I think that’s what makes it most impressive – the sheer number of tunes that each competitor knows. The first disqualification happens about six minutes in. There is also some good trick piano playing in the last couple minutes of the clip.