Joel Mandelbaum (born 1932) is an American music composer and teacher, best known for his use of microtonal tuning (notably just intonation and 19 equal temperament and the 31 equal temperament). He wrote the first Ph.D. dissertation on microtonality in 1961. He is married to stained glass artist Ellen Mandelbaum, and is the nephew of Abraham Edel.
Mandelbaum received his Ph.D. from the University of Indiana in Music Theory in 1961. His thesis was focused on the 19 equal temperament. He was a teacher and chairman of the music department at Queens College of the City University of New York from 1961 to 1999.
Mandelbaum became interested in microtonality after listening to a lecture by Paul Hindemith in which Hindemith inadequately debunked various alternative forms of tuning. He began a correspondence with Adriaan Fokker which led to a six-week stay in Haarlem in 1963, during which he composed music using Euler's genera under Fokker's tutelage. The result was "10 Studies in 31-Tone Temperament", which premiered on the Fokker organ in Haarlem.
Mandelbaum's motivation to use the 31 equal temperament arose from its close approximation to just intonation; Mandelbaum preferred the equal temperament to just tuning out of convenience, as it produced one tuning of a keyboard with which it was possible to explore approximations of chords to just tuning in any key. Although well known for exploring alternate tunings, Mandelbaum still uses conventional tuning in about 80% of his music. Mandelbaum attributes his use of conventional tuning to his reluctance to use keyed instruments (such as woodwinds) in tunings other than those that they were designed for.
Mandelbaum's music has been recorded on Capstone and Ravello (Parma Records).
- J. Mandelbaum, Multiple division of the octave and the tonal resources of the 19-tone equal temperament, PhD thesis, University of Indiana, (1961)
- Stichting Huygens-Fokker: Joel Mandelbaum
- "Six American Composers on Nonstandard Tunnings: Douglas Keislar; Easley Blackwood; John Eaton; Lou Harrison; Ben Johnston; Joel Mandelbaum; William Schottstaedt", Perspectives of New Music, Vol. 29, No. 1. (Winter, 1991), pp. 176-211.
- A page about Mandelbaum on the Huygens-Fokker Foundation's website
- Many performances of Mandelbaum's music have been posted by Leonard Lehrman & Helene Williams on YouTube