transient is a human-mecha performance featuring three human performers with mechatronic sound machines (MSMs). The MSMs in this performance and their sonic manifestations draw upon the concept of ensemble and instrumentality in their development. The performance explores the concept of sonic inhabitants in a performance with human intervention, providing an analogy of co-existence and co-creation with a vision of our mechanical futures. The human performers enact musical intentions with and to their mecha-counterpart, blurring the lines between control and agency, as well as emergence and intention, to create a sonic landscape that re-imagines our everyday lives when creative machines become more prevalent and ubiquitous.