Duet For Percussion and Helicopter (Nonsense/ Seeing=Believing)

"Is music still music if we cannot audibly perceive it? Is music inherently tied and central to human auditory and haptic perception? Is music a set of grid-like rules that act as a sieve to all sound?

I haven't the faintest idea.

But.

"Duet For Percussion and Helicopter (Nonsense/ Seeing=Believing)" is an absurdist performance piece, to take place between the Morrison and Hawthorne bridges, ~1000ft in the air. The performance will be viewable from either side of the esplanade and from each bridge."