"Untitled (Aleatoric Bike Piece)" is a multi-tiered tonal drone made of contextually harmonic and dissonant standing waves. The total piece is divided into seven equal parts and dispersed to seven different bicyclists. Each bicyclist carries their own portable speaker. The seven bicyclists ride together through the architecture of Portland's "Pearl" district, interacting with one another, with the moving public and with the concrete architecture. The semiotics of urban street signage becomes the score; a stop sign is a full stop, a pedestrian crossing is a half breath and a bicyclist's turn signal is a transposition. The act of riding and interacting with the downtown environment, hostile architecture and mass movements of traffic becomes the act of composing space and the perception of the unwitting spectacle audience.