Torin Hopkins, PhD

HCI & Interfaces · Instruments & Making

The Jam Station

Algorithmically detecting collaboration in a collaborative musical instrument.

DOI

The Jam Station is a collaborative instrument built so that people of any skill level can make music with strangers. Four players face a tower of chimes, drums, and lights. Sensors and real-time algorithms measure how well the group plays together, and a progress bar fills as they lock in. A full bar wins the game and sets off a light show.

Motivation

Western improvisation teaching is usually designed for people who intend to become skilled musicians, so many novices never experience music’s collaborative potential. Collaborative musical experiences (CMEs) in museums and public spaces invite everyone to play. The Jam Station explores what happens when a CME is gamified and judges performance solely on collaboration, not on musical skill or aesthetics.

Design

  • Instruments are limited to three notes (C, E, G), forming a major triad that always sounds harmonious. Each note is shown as a color (red, yellow, blue).
  • A central display shows each instrument’s notes in real time, so everyone can see what the others are playing.
  • Collaboration algorithms in Pure Data detect event synchronicity, synchronous rhythm, synchronous pitch, subdivision matching, and repeated melodies.
  • A progress bar of rising white lights climbs while players collaborate and falls when they don’t. Reaching the top triggers a rainbow "win state" that lasts only as long as the group keeps playing together, so the game ends only when the players decide to stop.

Video

The Jam Station video

Gallery

The Jam Station: four instruments facing a central tower display.
The Jam Station: four instruments facing a central tower display.
Chimes tuned to a major triad.
Chimes tuned to a major triad.
Color-coded drums with embedded piezo sensors.
Color-coded drums with embedded piezo sensors.
The rainbow "win state" when the group collaborates.
The rainbow "win state" when the group collaborates.

Publications

  1. The Jam Station: Gamifying Collaborative Musical Experiences Through Algorithmic Assessment

    Torin Hopkins, Peter Pascente, Wayne Seltzer, Kellie Masterson, and Ellen Yi-Luen Do

    Fifteenth International Conference on Tangible, Embedded, and Embodied Interaction (TEI), pp. 1–6, 2021.

    DOI

  2. Computer-Supported Music Improvisation

    Torin Hopkins

    Ph.D. Dissertation, University of Colorado Boulder (ProQuest), Boulder, CO, USA, 2024.

TENOR 2020

Jam Tabs

Investigating alternative, color-based music notation and tools for novice improvisation.

ProjectPDF (TENOR)