In this technical masterclass, Professor Kolja Blacher suggests to the student an exercise to improve the vibrato, in order to reach a wider and more controlled vibrato. The student practices this with a passage from the Violin Concerto No. 1 by Paganini.
Afterwards, Professor Blacher proposes some exercises to achieve better sound when the student plays with the tip of the bow. Besides, the student makes an exercise based on scales, so she could lift properly the fingers, and therefore to be able to improve the shifts and the string changes.
Finally, Professor Blacher recommends another additional exercise to improve the vibrato and they work on it.