The dissonant clash of the second interval effectively conveys a rather difficult and ill-tempered disposition. To produce sharp and incisive tones, practice striking the keys with swiftness. Following the attack, immediately release tension, allowing the key to rise slightly from the keybed. The resulting decaying sound prepares for the note on the subsequent third beat. Ensure that the third beat is not overly emphasized, and accurately render the duration of the eighth note. Furthermore, in the case of a half-note double stop, it is ideal for the upper note to be slightly more prominent. To achieve this, rather than striking vertically, employ a slight clockwise twisting motion to mitigate the force applied to the lower note. While this technique presents some difficulty, it is crucial to consider the balance of individual notes within chords and double stops. Therefore, its incorporation should be adapted according to the student's age and stage of learning.