Video

Craig Taborn and Vijay Iyer duo:

This video demonstrates that freely improvising musicians are capable of generating music with rich structure, including tonal structure. (https://www.youtube.com/watch?v=15mftIoZTkM)

TwinTalk:

This video demonstrates that improvising ensembles transition between distinct "soundworlds"; qualitatively different musical textures that persist for sustained periods of time.

Exemplar trials from behavioral study (Chapter 2)

Exemplar coupled duet:

Exemplar one-way duet:

Exemplar trials from TonalEmergence agent-based model (Chapter 3)

Random walk through tonal space:

coupled. (tau=0.1, gamma=5):

oneway. (tau=0.1, gamma=5):

coupled. (tau=1, gamma=10):

Shifting Tonal Basins. (If this is difficult to hear, it might be useful to contrast with the random walk.)

oneway. (tau=1, gamma=10):

coupled. (tau=1, gamma=100):

Degenerate pitch matching

oneway. (tau=1, gamma=100):

coupled. (tau=50, gamma=10):

Degenerate atonality.

oneway. (tau=50, gamma=10):

coupled. (tau=50, gamma=100):

Entrenched Tonal Basins.

oneway. (tau=50, gamma=100):

Entrenched Tonal Basins.