Jonathan Hart's Voice Work is known all over the world, arising from the world-renowned Master Voice Teacher Roy Hart, his step-father. For the past 19 years, Jonathan Hart Makwaia has been a professor of Voice at New York University’s Experimental Theatre Wing. Jonathan Hart Makwaia served as musical director, composer and performer for the world-renowned Roy Hart Theatre from 1975 to 1988. Since 1988 he has been based in New York City, collaborating with artists such as Ellen Stewart, Molissa Fenley and Rosanne Cash. He regularly teaches Masterclasses and workshops all over the world and at Naropa University, in Boulder, Colorado.

Jonathan Hart Makwaia integrates his multicultural roots as a composer, performer and teacher, expanding the role of the voice in the performing arts and for personal growth. Roy Hart teachers view the voice as a channel through which your 'many selves' can be consciously realized and integrated into your life and your acting. Roy Hart teachers approach voice work through intense archetypal exploration, spontaneous imaging and formless improvisation.

Credits include Pagliacci (winner of 1985 New York Obie Award), De Vive Voix (chosen to represent France on a tour of seven South American countries), and Kaspar (first prize at the "Charles Dullin Festival" of Villejuif, Paris). Recent work includes a commission for Molissa Fenley at the Joyce Theatre, the MATA composers' series produced by Philip Glass, singing the title role in Gene Tyranny's new opera Blue, The Driver's Son, and recording a new CD of his solo concert music, described as a "a spectacular display of vocal timbres and techniques" by the New York Times.