In this masterclass Professor Frankl explains some general aspects of sound in relation to Beethoven: the importance of sound in this composer, even in dynamics marked as "piano". So it is very important to pay attention to the dynamic when it is written "cantabile" on the score. The professor finds also very useful to identify every sound with the color of each orchestral instrument. We have to be aware of the sound we want to achieve in every note and prepare it beforehand.
Professor Frankl also talks about the melody as a main parameter: melodic elements have to sing as an opera singer. In the phrasing, we must identify the most important pitch, the summit. The use of the pedal can help to get more intensity in a passage (more pedal=more intensity).
In relation to sforzati, it is necessary to measure the power and force of every sforzato and establish a hierarchy. The syncopations in left hand are very important because they dress up the melody.
In the development, the student has to know that this is the most difficult part because the material is fragmented and not organised in a line; there are two notes that remind the main theme. A different atmosphere is required here and the rhythm has to be more accurate.
Professor Frankl also talks about the use of pedal in passages with both crescendo and decrescendo and suggests to the student to pay more attention to dissonances.