A Performer's Analysis of Benjamin Britten's Phaedra, Dramatic Cantata for Mezzo Soprano and Small Orchestra, op. 93: a Lecture Recital, Together with Three Recitals of Selected Works of H. Purcell, R. Schumann, R. Vaughan Williams, P. Tchaikovsky, G. Fauré, K. Löwe, G. Menotti, S. Barber and Others