Hello, by Alexander Schubert
(2014) For {any number of} instruments, live-electronics and video

Excerpts from composer’s notes:

The piece is audio-visual. It’s basically a video that is accompanied by the instruments. The video consists of video recordings of the composer performing certain actions / gestures. These gestures are notated in the score as well and need to be interpreted by the musicians (as musical events – not as theatrical actions / physical movement – the idea is to find corresponding or contrasting music events for the given gestures).

The piece is really based on the video and the electronics in the tape, meaning that in the rehearsal progress, rather use the video as an orientation and not the only the score. The score is a tool to make it easier to play along with the video, but eventually the video is the real score.

The piece can be played more or less by any combination of instruments. It is advised to have at least four players, one of which is a piano/guitar/accordion or similar to play chords. Also a percussionist should be included. For combinations that do not fall into this description please contact the composer to check.

You are invited to use other small instruments or props other than those found in your ensemble. For example toy instruments, everyday household tools or found objects. Chose these instruments in order to fit a given video gesture you want to accompany.

More info here and here.