The Castaldo piece about Mithras worship continues to be interesting and, at times, brutal, especially for the sopranos who have a lot of high, light, sustained singing. The archival recording of the only previous performance of the piece, its premiere, was made available to us, so at least I've heard what it will really sound like with the percussion and narration added in.
I drilled a lot of the tricky text, but one bit with no words at all turned out to be much, much harder in practice than on paper. It's just three groupings of notes at the same time as four groupings of notes in another part, but our three groupings change a few times, from downbeat to offbeat, so you can't just turn off your brain. It's one of those occasions when preparation helps but the only real cure is singing it all together. We spent an inordinate amount of time on that section, trying different approaches. By the last run, it was much better, but still not perfect. I'm going to listen to that section on the recording again today, to see if I can pick our line apart from the massive tangle of rhythms.
This is going to be a really cool concert. I just hope people will come to hear it.