Commissioned by the HD Duo, 2015.​

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Once I received the commission from HD Duo to compose a piece for saxophone and piano, I asked Michael Duke to select for me his favorite multiphonics for alto saxophone and send me a recording. I analyzed the spectra of these recordings, establishing the eight dominant partials for each. I used these chords as the basic materials for the piece; this is why the work is called Spectrax. I then placed these chords to extract musical ideas, which I transcribed into the score. 

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The final details of the piece were polished together with the HD duo during the days before the world premiere in Mexico City in 2015.