I added this piece by Vincenzo Ruffo because a friend wanted to try it. It's a canon, but Ruffo wrote out all the parts because there are some places where the musica ficta are different between the parts. And they end all together on a chord, so that happens at different places.
One interesting feature of this canon is that the second part enters a whole note later than the first part and a fifth up. But the third part is an octave up from the Bassus, but only one half note later than the second part.
There are some challenging rhythms. I expected it to be easier for the relatively inexperienced members of my group than written out polyphony, because I could just play the first part (Bassus) and tell them to do what I did. But it turned out that when they're counting complicated rhythms, they can't also listen to someone playing the rhythm one or three beats ahead of them. So we only really got through it when another experienced person arrived, and we could have an experienced person on each part.
But it was good practice for them -- after getting through that we breezed through several Holbornes with no trouble at all.