elesyn 15.625 goes back to the fundaments of electronic sound and image synthesis—the electromagnetic signals, their frequencies, amplitudes which are the basis for colours, lines, tone pitch, movement and dynamics. Moving images and music are generated by "simple" forms of signal routing like acoustical and optical feedback, radio waves, bended circuits. The result is a very colourful - in the visual as well as in the the aural sense of the meaning - diorama of "electric synaesthesia" or the idea thereof.