In this masterclass, Professor Geringas makes some comments on sound production and contact with the instrument. Professor and student work on dynamics, indications written (and "no written") in the score, phrasing, meaning of "morbido", sound balance to get diminuendo from pianissimo, accents, and so on.
Professor Geringas tells a story about a competition related to this Cello Sonata and he explains the importance to play all the written indications and the relativity of all the things, including the music. Finally, Professor insists on dynamical issues and he gives to the student an advice to play better the piano voce at the end of the piece.