The pentatonic scale
Every player plays the same five notes: C · D · E · G · A (C major pentatonic). With no semitones between neighbouring notes, any combination sounds good together.
Each player is still unmistakably themselves: their own instrument, octave and rhythm. Height on the wall sets the pitch, speed sets how loud and how often notes sound, and stepping closer to the camera makes the tone brighter. A shared pulse keeps everyone in time, and on the first beat of each bar notes settle onto the current chord, so the six parts lock together.
Harmony now CC · E · G
Keys light up in the player's colour as each note plays. F and B, and all the black keys, are left out. The chord moves every two bars through C, A minor, D and G, using only these five notes.
Room sizes from RMIT Gallery's plans and elevations for Gallery Three. Player, camera and projector positions are a proposal, scaled by eye from the plans and installation photos. The cameras for the doorway wall sit either side of the doors so people can still walk in.