Sean Russell Hallowell (aka isorhythmics) is an audiovisual artist from the Bay Area. His performances and installations synthesize compositional techniques developed from hand-built electronic circuitry with a cosmic perspective on music’s origins in number and time. In his art, visual and auditory phenomena emerge as dual manifestations of what Medieval European musicians called the “arts of number” – i.e. music, arithmetic, geometry and astronomy. Concert works and multimedia installations of his have been showcased at festivals and galleries across the US as well as in Mexico, Chile, South Korea, the UK, Belgium, Croatia, and Iceland. He holds degrees in music theory from Brown University (AB) and Columbia University (PhD) with a specialization in 15th- and 16th-century Franco-Flemish vocal polyphony.