This is a song by “you know who” is titled Il Magnanimo Pietro, which means The Magnanimous Peter.
Many of these songs I have been posting have just 4 parts. This song has seven lines of music that harmonize perfectly.
And here, for some reason, is the number one downloaded song from this site. It is currently heading towards 1,000 downloads. For all of you mathematicians out there, it is less than 1,000 downloads, and closer to 1,000 than it is to 200.