Well, the problem was that I am an idiot.

While I normally use M3 for drums, for some reason on that pattern I had copied my pattern to M1. Earlier, I had set M1, 2 and 3 to send on channel 3, because that’s the only channel the Tanzbar drums receive data from.

Thanks for your help, though. In a minute, I’ll get my face out of my palm and carry on.