Performing Sequences: Interaction and Instrumentality in the Design of a Performable Sequencing System

Sequencers play a central role in electronic music practice, yet are rarely treated as instruments capable of supporting real-time interaction with sufficient creative flexibility for improvisation. This paper investigates how a sequencing system can be designed as a performable instrument. We present a digital MIDI sequencer implemented in Pure Data, based on Euclidean rhythms and extended through direction-based melodic traversal, rhythmic–melodic coupling, and constrained modulation. Two improvised compositions performed by the first author provide a practice-based evaluation of the system's performability in live use. The findings suggest that low-dimensional, rule-based control and clear gesture–outcome relationships can support interaction-driven improvisation while preserving performer agency and authorship. This work contributes to the NIME community by offering design strategies and practice-based evaluation insights for treating sequencers as performance instruments.