Ah Wulf - who is the finest bass player I know, a man with dexterous fingers and great musical sensitivity - asks the right question: will mistakes be part of our new song?
Well, I think possibly they will. It opens up a whole theological discussion about the relationship between mistakes and sin - they can't be the same, can they? And so there must have been mistakes before there was disobedience in the garden...
Even more heretical(?) Jesus must have made mistakes as he learned to be a carpenter. You can just see Joseph's exasperated expression as Jesus messed up a mitre joint (whatever one of those is!) and his patient retelling of his apprentice son how it's done.
So, in the jam session I hope to have with Wulf after the resurrection - when I will have had time to sit and perfect my guitar technique - I've no doubt we'll make lots of mistakes. But the music we make by the end of that session will be sublime!