Track 2 of the audiovisual album Oscilloscope Music
available at http://oscilloscopemusic.com

What you see is what you hear: The audio signal is fed directly into the oscilloscope, where vector graphics are drawn with sound.
Filmed from an analog Hameg scope. The download contains a slightly cleaner looking version of this track (recaptured from a Tektronix 5103N oscilloscope).

left audio channel: horizontal deflection
right audio channel: vertical deflection

software used: Max MSP, Ableton Live