Professor Gunter Pichler works on the cello introduction in detail: less bow, attention to the rhythm, tempo and more concentrated sound. Later on, in the rest of the movement, they work on rhythm and sound (it is advisable to play with 'more air'), character, harmony, balance, articulation, vibrato and fingerings. Pichler explains that 'sotto voce' and 'mezza voce' come from singing, but it is not necessarily pianissimo. The chords have to be played with more weight and extension of the bow, constantly being aware of the harmony.