I perform often and in a variety of electro/acoustic contexts. My self-made instrument is called GREIS (pronounced "grace") which stands for Granular-feedback expanded instrument system. The EIS part is a nod to Pauline Oliveros as she has inspired me through her work with improvised electronics -- I use GREIS in the trio Triple Point of which Pauline and I comprose 2/3s. The granular-feedback part refers to the basic concept: "grains" - which may be small temporal fragments of sound or spectral fragments (e.g. partials, transients) are propagated and fed-back throughout the system. The other basic concept is that of shaping sound manually (via right hand "scrubbing" actions) and build layers, loops, textures "by hand" in an organic fashion. I also let the machine make some decisions on when to present sounds -- causing me to react.
For some time I have rejected or at least have not focused on the theatrical aspect of performing live. Over time I have encountered a fair amount of interest in what I am doing when I improvise live; as a reaction to this, I have started to present my two hands in certain situations in a top-down view. In the case of this video it was for a streaming perfromance as part of a telematic music festival.
This 17 minute performance is a completely free electro/acoustic improvisation. I begin with a few recorded sounds - a bell, some synthetic sounds, feedback noise - and shape this into something new by exploring and prodding the sounds, creating textures and working with the machine.
By all means feel free to close your eyes and listen. However if you are curious about intrument design, I'll note that nearly all sounds are somehow shaped with my right hand, while my left hand selects different mappings for the tablet and the various controllers. These (simple, off-the-shelf) controllers modulate either the sound transformation parameters, control the probability of something happening, or actually modulate the mapped "surface" of the tablet itself (that is an entirely different discussion...).
Again, feel free to close your eyes and listen or to watch the human intention behind it all. This is purely a free improvisation -- contrary to the digital paradigm it is open and full of "errors"...human decisions that could have gone in a "better" direction. It is one of an infinite number of outcomes. I plan to keep playing until every such outcome has been realized. ::::