In last night's dream, I am about to conduct what looks like a late Mozart opera - late because it has a soprano aria with a clarinet obligato - but not "Clemenza" so this is an undiscovered work. I'm looking at the score and hearing the clarinet solo in my head and am furious to discover that two bars that are all in semiquavers have been rewritten so that the first bar has become two bars, all in quavers - slowed down to make it easier to play.

I'm screaming at everyone around me. The weird three-bar phrase is resonating in my head and I enter a glass elevator which is about to take me up to the performance space....