Like and old science-fiction movie, this synaesthetic show felt like looking to the future with the eyes of the past. The stage was Flash Gordon's bachelor pad - full of theremins, aquaphones, glowing Jacob's Ladders and large focusing lenses. Oh, and of course, a big gold lamé drape. The handout, in the style of a penny dreadful, titilated with the wide-eyed promise of a "Singular Manifestation of Great Spectacle".

And sparks did fly, as the collaborators - Pram, Blissbody and Project Dark - used light-to-sound technology to let us hear electricity we normally only see, played on inventions such as the Spark-o-phone. First, a simple demonstration: a giant light bulb, glowing and fading on a dimmer switch, became awesome, bowel-relaxing audio - a giant Harley Davidson being revved up. It created an exciting, anxious feeling; the sound played havoc with the space between your brain and skull.

For the first half, it was trick or treat. Demonstrations were sandwiched between musical grooves (bringing in clarinet, bass, drums, trombone) that felt like they wanted to travel, like Sun Ra, the spaceways of cosmic music. But they stumbled rhythmically too often to hypnotise.

It was in trying to get the science and music to join hands that the show faltered. At times the choice was tough: a swirling, dubby soup, in which the crunchy sound of, say, the Jacob's Ladder got a bit lost, or a swordfight between sparking flints that needed more structure - so that the sound was used, not just demonstrated.

There were definitely moments in the second half when, like a spark darting from one rod to another, the experiment fused, and a Frankenstein's monster came to life. But it was a shame that those times were too rare to stop the show's electricity being earthed.

· At Colchester Arts Centre tonight. Box office: 01206 500 900.