Liam, following your thread creep, it is a while since I have done any singing in my local folk clubs but I always found that the first time of airing a song that I had never sung in public before was guaranteed to go wrong regardless of how long I'd practised it or even in some cases, how many years I'd known the song. I just reached the point where I'd say to myself "this is going to screw up but it's over with then and it will be OK next time"...

Jon