Exploring the resonant properties inside a Bb clarinet caused by overtones, overblowing and other unusual reed techniques, Switch~ Ensemble clarinetist Madison Greenstone generates ten studies of extreme yet tremendously controlled anomalies on the single reed, each piece a masterwork of control in the extremities of unexpected sonic expression.

Two clarinetists--John McCowen, also the composer, and Madison Greenstone, both on clarinet & bass clarinet--taking the title from Boethius' (427-524 AD) printed work on ancient Greek music: "De institutione musica", as they generate long-form drones using the harmonic interactions and interference patterns of similar tones, overtones, and difference tones; impressively intense.