Fugue for Fours - (2013) 
for piano
The fourth has become synonymous with quartal harmony, as in the pleasantly consonant chords which introduce the fugue which begins as accompanied with a second voice beneath. A 4/8 signature is used as well diatonic successions of intervals of the fourth in the subject.
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3 pages, circa 3' 20" - an MP3 demo is here: 
The score is available as a free PDF download, though any major commercial performance or recording of the work is prohibited without prior arrangement with the composer. Click on the graphic below for this piano score.
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Fugue for Fours
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