In this masterclass, Prof. Reri Grist works mainly on the student's articulation for the vowels. To improve this, Professor Grist recommends searching for a better voice colocation and the use of the facial resonators. In this sense, Reri Grist indicates the student to open her voice upper but at the same time maintaining the jaw more relaxed.
As a conclusion, Prof. Grist highlights the importance of using the head resonance to project the voice properly, and the appropriate articulation for vowels and consonants.