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

Flyer advertising children's musical workshops and instrument construction classes at Sonic Arts Gallery I.
Jonathan Glasier. Musical Workshops for Children. Sonic Arts Gallery I, San Diego, 1987.
Uploaded April 2026
Flyer for Sonic Choir Class at Sonic Arts Gallery, directed by Jonathan Glasier, featuring vocal harmonics and sound healing instruction.
Jonathan Glasier. Sonic Choir Class flyer. Sonic Arts Gallery I, San Diego, 1970s–1980s.
Uploaded April 2026
Flyer describing five instrument-making workshops led by Jonathan Glasier at Sonic Arts Gallery I in San Diego.
Jonathan Glasier. Instrument Making Workshops for Sonic Arts Gallery I. Sonic Arts Gallery, San Diego.
Uploaded April 2026
Announcement for Sonic Arts Gallery exhibit of Stephen Kent Goodman's Automated Sound Sculptures, December 5, 1987.
Sonic Arts Gallery. Announcement for exhibit of Stephen Kent Goodman's Automated Music Ensemble, a five-year project of wind, string, and percussion sound sculptures controlled by a touch-sensitive keyboard. December 5, 1987.
Uploaded April 2026
Exhibition announcement flyer for Automated Music Ensemble sound sculptures by Stephen Kent Goodman at Sonic Arts Gallery, San Diego, 1987.
Stephen Kent Goodman. Automated Music Ensemble exhibition announcement. Sonic Arts Gallery I, San Diego, December 5, 1987.
Uploaded April 2026
Press release cover for multimedia exhibition at Sonic Arts Gallery, San Diego, 1989.
Frederick Abrams. F Train Fugue and the Underground Cathedral. Sonic Arts Gallery, San Diego. December 2, 1989.
Uploaded April 2026
Newspaper article about Jonathan Glasier's Sonic Arts Gallery featuring experimental musical instruments.
Hilliard Harper. 'Sonic Arts' Pieces Beg to Be Touched. Los Angeles Times, October 3, 1987.
Uploaded April 2026
Newspaper article about Ken Gray's interactive electrosculpture exhibit at Mississippi Museum of Art's Open Gallery, featuring photos of the artist demonstrating his work.
The Clarion Ledger. 'Hands On! Ken Gray's Electrosculpture.' Mississippi Museum of Art, Sonic Arts Gallery I.
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.

Musical Instruments Gallery

Explore pictures and recordings of, and information about, microtonal instruments and their makers. Go to the gallery.