Seven Bird Watchers (2019) for a drum machine ensemble.  For a performance, three or more drum machine players change parameters of the machine according to the score. The pulse of the drum machines is synced to a customized sync track that fluctuates seven times between slow and fast. Three percussive instruments make bird-like chirping when they are on speedy tempo.

The score is available at the following link.

https://joowonpark.net/wordpress/wp-content/uploads/2019/06/SevenBirdWatchers.pdf

The sync signals are downloadable in the following link in three formats: mp3, SuperCollider file (.scd), and mp4 (video).

Seven Bird Watchers Performance Data

Here’s a tutorial video on how to interpret the score