This is a bit much.
I understand the whole “innovation” in music thing, but a six hundred thirty-nine year piece of music is a little long. To put this into perspective–supposing that I have children at some point–my great great great great great great great great great great great great great great great great great great great great grandchildren might hear the end of this piece.
My other question is, “Are they recording this for posterity?” Because honestly, it would be a damn shame if no one else were able to partake of this piece of musical history.