Mr. Prokhorov-Tolstoy is internationally recognized voice instructor and creator of a unique method of vocal training and performance and voice rehabilitation technique called "ONE TWO THREE SING ®"  (U.S. federal trademark serial number of 86200198). He teaches series of master classes and gives lectures on the subject throughout the United States and Europe, including Gnessin State Musical College and the Higher School of Performing Arts (Theater School of Konstantin Raikin) in Moscow.  His voice teaching method and skills were praised by national newspapers including the Boston Globe, USA National Radio and TV stations. He was also featured in the national TV show “Young Marvels” by Ovation TV as a teacher of vocal prodigies.  Alexander’s students are featured on America’s Got Talent and appear before the celebrity judges, honored to perform US National Anthem at sport’s championships, including legendary Red Sox baseball team games in Boston.

His students regularly win renowned international vocal competitions and perform on stages of renowned theaters and philharmonic halls, including the legendary Carnegie Hall in New York, the famous Boston Symphony Fidelity Investment young Artists Competition at Boston Pops in Boston, Jordan Hall of New England’s Conservatory, and others.  Alexander often presides as an honorable member of Jury of national and international competitions, with genre ranging from Opera to Broadway and Pop/Jazz.

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