The first phase would be just Atheas without the Spirit, singing, Say It, maybe, due to the tragic loss of his best friend?
The second phase could have the Spirit as the left and down notes, and Atheas with the right and up notes, singing https://youtu.be/2mzuoEjyC0k OR https://www.youtube.com/watch?v=PsA2hMQYrQw .