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Ezra Sims is one of the pioneers in the field of microtonal composition. He invented a system of notation which was adopted by many microtonal composers after him, including Joseph Maneri.
His professional debut occurred on a Composers Forum program in New York, 1959. In 1960, compelled by his ear, he began writing microtonal music, and has continued to do so ever since, with the occasional exception being taped music for dancers. His last composition in quarter tones was his Third Quartet. Since 1971, whatever music he has composed that is not purely electronic has employed a system of asymmetrical modes of 18 pitches per octave, drawn from a 72-note division of the octave.
"I seem finally to have identified and made transcribable what my ear was after all along: a set of pitches ordered in an asymmetrical scale of 18 notes, some of them acoustically more important than others, transposable through a chromatic of 72 pitches in the octave."
He has received a Guggenheim Fellowship, a Koussevitsky commission, and an American Academy of Arts & Letters Award, as well as numerous commissions from organizations like the Arizona Friends of Chamber Music and private individuals. He was a co-founder of the Dinosaur Annex Music Ensemble, with Rodney Lister and Scott Wheeler, for which he served as President from 1977–1981 and as a member of the Board of Directors from 1981 to 2003.
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