Just realised...

That is might not make sense. I talked and talked about costumes, and then swapped to drums... At the costume run, the percussion part appeared in my handbag. When I remembered to ask Ed (the MD), it turns out that he would like to take me up on my offer to play in the show. But I didn't have chance to look at the music! So played half of it at the dress rehearsal, and sight read the rest on the opening night. I've gradually been telling people that I'm not a percussionist, I'm a cellist. And I haven't seen the part lots. And then they're impressed with me. Before that, they think I'm rubbish, which is probably fair...