Maria Callas, the singing actress, returned to the stage in 1971 to teach master classes at Julliard. Outspoken in her artistic beliefs, uncompromising in the musical understanding that she sought to communicate to 25 students, Callas worked through her arias from Mozart, Verdi, Rossini, Puccini and others.

This detailed analysis of every record made by Maria Callas examines the development of her art from her first recordings in 1949 to the last in 1977.