In an age of endless manufactured pop, The Bays' musical project could be called revolutionary.

This is a band with a defining purpose - to improvise dance music live. United by their rallying cry ("Performance is the product") and operating without individual egos or prior rehearsal, these four musicians produce evolving surges of groovebased music that can never be repeated.

Refusing to release records, The Bays can only be experienced in the moment, on the dancefloor, where the interaction between the musicians and their audience can become acute.

The downside of this radical approach is that some Bays gigs reach greater heights than others and on Saturday, the start of their bi-monthly residency at Audio, they locked quickly into a mid-tempo house groove which they found difficult to shake off.

But it did the job and it remains hard to believe that everything the crowd was dancing to was being made up on the spot.