For the initial cue, it is necessary to blow quickly without thinking on the high note because the required attack is very fast. The professor mentions how the performer must help herself by using the lips to reach the high tessitura.
French tradition usually imposes to play fast passages alternated with slower ones, but in this case the air is always "vif". Then they work on dynamics, metrical freedom, vibrato or phrasing for the fast descending passages, among other musical issues.
Prof. Friedrich also recommends not doing very big diminuendi in order to avoid losing the sound in the concert hall. Scherzando must not be exaggerated but progressing little by little. Besides, they speak about the sound ending, fermata and notes duration to get more expressivity and energy control. Finally, the professor explains how to perform the cadence. As per the performance, the professor congratulates the student.