Kaleidojecture

General

Year 2026
Type Acoustic
Size Chamber
Duration 8 min

Instrumentation

Marimba, Vibraphone (with additional Glockenspiel plates), Piano

Commission

Written for Han Xia, Kyle Rappe, and Matt Boyle from the Yale Percussion Group

Score Video

Music Video

About the Work

The Collatz Conjecture remains an unsolved mathematical problem. It assumes that we will always reach a loop if we keep halving any even positive integer or tripling it and adding one if it is odd. I explored what happens when we treat that initial number as a frequency. Repeating these basic operations in 12TET yields a satisfying chain of octaves and fifths, and the resulting pitch relations became the generative core of my composition. The title of this percussion trio deliberately incorporates two Ancient Greek words: kalos (meaning “beautiful) and eidos (meaning “form”). I constructed 'Kaleidojecture' using a modified ritornello form in which recurring stretto canons are refracted by episodes of rhythmically driven material laced with metric modulations.

Performance History

Apr 24, 2026
Kyle Rappe (vibraphone), Han Xia (marimba), Matt Boyle (piano)
Matt Boyle, Percussion MM Recital · New Haven, CT, US
Apr 16, 2026 Premiere
Kyle Rappe (vibraphone), Han Xia (marimba), Matt Boyle (piano)
New Music New Haven · New Haven, CT, US

Music Shorts