Juan Nasal Florez vs Armida Parsi Pettinella and Maria Callas
Florez: "I used to sing too dark, like what the students want to sing. But it's wrong. You have to lighten the voice, don't sing like a tenor."
Callas: "You have to have the chest voice, the passage and the top notes, this is the only way to sing! Don't be afraid to have the low notes!"
![](https://i.ytimg.com/vi/IAEXG-TbUmo/mqdefault.jpg)