The Variations for Piano, Op. 27 of Anton Webern and the Quaderno musicale di Annalibera of Luigi Dallapiccola: A Lecture Recital, Together with Four Recitals of Selected Works of J.S. Bach, W.A. Mozart, F. Schubert, R. Schumann, J. Brahms, F. Chopin, A. Schoenberg, and M. Ravel: Searching Inside