1 Divisio spiralis (2019) for string Quartet: I Christopher Otto, JACK Quartet, Austin Wulliman, John Pickford Richards, and Jay Campbell
2 Divisio spiralis (2019) for string Quartet: IV Christopher Otto, JACK Quartet, Austin Wulliman, John Pickford Richards, and Jay Campbell
3 Divisio spiralis (2019) for string Quartet: XIII Christopher Otto, JACK Quartet, Austin Wulliman, John Pickford Richards, and Jay Campbell
4 Divisio spiralis (2019) for string Quartet: III Christopher Otto, JACK Quartet, Austin Wulliman, John Pickford Richards, and Jay Campbell
5 Divisio spiralis (2019) for string Quartet: II Christopher Otto, JACK Quartet, Austin Wulliman, John Pickford Richards, and Jay Campbell