Kotek Turns a Phone into a Gamelan Practice Partner

Field notes

Kotek’s workflow depends on a physical gangsa rather than a simulated keyboard: the player mounts a phone overhead, selects a pattern and role, and follows visual timing cues while the camera listens for key strikes. The interface includes beginner-to-expert pattern levels and can play the complementary polos or sangsih part. A sample session reports 92.4% accuracy, three mistakes, eight best cycles, and a tempo of 26.4, making the intended feedback loop unusually concrete.