The professor mentions the recordings of Koussevitzky playing his own works and he specifically recommends the students to listen to the recording of this Double bass Concerto.
He also gives some indications about character, vibrato, harmony accuracy, and the character of syncopations as if he was describing the sunrise - with a lot of intensity and keeping the tension.
In addition, the professor explains while he is playing how to get a better sound in a certain passage with chromaticism. In the passage alla breve, the student has to think in 2, not in 4 parts, find a different colour - an easier and more relaxing sound - and pay attention to the anacrusis. The professor also advises the student not to look at the fingers to find the position on the string, as he does not need it. He proposes some fingerings, articulations, bow strokes and directions.