Here is Example 10. In Ars Subtilior (Subtle Arts) Music and poetry gets more involved and rarefied. In music this was an increase in rhythmic complexity and presentation, with scores being presented as pictures such as hearts, and mazes. Here is a Ballade by P de Caserta Par le grant senz d Ariane la sage, which is more concerned with the melodies and rhythm than the poem. These 15 videos are the examples at the back of a book by Nigel Wilkins, called One Hundred Ballades, Rondeaux and Virelais recently read by me.