Juan Nasal Florez vs Armida Parsi Pettinella and Maria Callas<br /><br />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."<br />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!"<br />...<br /><a href="https://www.youtube.com/watch?v=btOhr3fPdTc" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=btOhr3fPdTc</a>