He was born in a Jewish family in Vilnius, Lithuania and studied violin with Leopold Auer at the St. Petersburg Conservatory. He arrived in the United States in 1923 to take a job as an assistant to Auer. Mr. Bronstein had one daughter, Ariana Bronne, who taught at the Manhattan School of Music.
Mr. Bronstein's teaching career spanned 65 years and was responsible for a large number of the current generation of leading violin teachers and performers. He taught at the Hartt School in Hartford, Boston University, Manhattan School of Music, Queens College and the Graduate Center of the City University of New York. He is remembered annually at the Manhattan School of Music with a Commencement Award in his honor. Bronstein's students have included Elmar Oliveira, Michael Ludwig, Martha Strongin Katz, Lya Stern, Jay Zhong, Kerry McDermott, Judith Morse, Estelle Kerner, Richard Auldon Clark and his own daughter Ariana Bronne. Daniel Kobialka and Phillip Ruder are also among Bronstein's most noteworthy students.
He founded and conducted the Bronstein Symphonietta in 1949. He wrote the Science of Violin Playing.
He died in New York City in 1988.
- Applebaum, Samuel. The way they play, Paganiniana Publications, 1984.
- Press, Jaques Cattell. Who's Who in American music. Classical, 1st edition, R. R. Bowker, 1983.