Welcome to Interval Archive

An archive of the microtonal music journal INTERVAL and information by and about microtonal musicians. 

The Interval Archive is a compendium of *microtonal music-related compositions, articles, and letters during the years of Interval Journal 1978-1986, and up to the present writings, recordings, and activities.
Sections will be devoted to microtonal stalwarts Ivor Darreg, Harry Partch, Buzz Kimball, Erv Wilson, and others.

Interval Journal, Issue 1. Spring 1978. Cover features Ivor Darreg with his Megalyra.
Interval Journal, Issue 1. Spring 1978. Cover features Ivor Darreg with his Megalyra.

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Recent Uploads

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Harry Partch. Review of Joseph Yasser's 'A Theory of Evolving Tonality.' Handwritten manuscript.
Uploaded April 2026
Announcement for limited vinyl recording of Harry Partch compositions featuring intoning voice, harmonic cannons, marimbas, and other microtonal instruments.
Harry Partch. Announcement for limited recording of Twelve Intrusions and Dark Brother, featuring 43-tone-to-the-octave system instruments. University of California, Berkeley.
Uploaded April 2026
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Harry Partch. Biographical promotional material for BMI (Broadcast Music, Inc.), featuring critical commentary and instrument photographs.
Uploaded April 2026
Letter from Harry Partch dated May 4, 1959 regarding U.S. Highball subscription fund and recording details.
Harry Partch. Letter to Harold and Bertha Driscoll regarding the U.S. Highball subscription fund. May 4, 1959.
Uploaded April 2026
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Harry Partch. Promotional flier cover.
Uploaded April 2026
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Harry Partch. Photographs of Instruments Built by Harry Partch and Heard in His Recorded Music. Gate 5 Records, c.1957.
Uploaded April 2026
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The Harry Partch Trust Fund. Announcement for recording project to produce Oedipus. February 5, 1954.
Uploaded April 2026
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University of Illinois School of Music. Faculty Chamber Music Concert program, November 7, 1956. Featuring Harry Partch's Ulysses Turns Homeward with diamond marimba and bamboo marimba.
Uploaded April 2026
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University of Illinois Festival of Contemporary Arts. Program cover featuring Harry Partch's The Bewitched dance premiere. March–April 1957.
Uploaded April 2026
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Harry Partch Foundation and San Diego State University Percussion Division. Music by Mavericks: An Evening of Primal Source Music, featuring the Harry Partch Ensemble (Music Director: Danlee Mitchell) and the Young Americans. Smith Music Hall, February 24, 1981.
Uploaded April 2026
Jonathan Glasier experimenting with the Lumatone

Music Lessons

Personalized lessons in-person in San Diego or online anywhere you are. Learn vocal harmonics and 19edo microtonal practice with Jonathan Glasier, and anything about tuning theory and music history with Joseph Monzo.

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