Formidablly grand singing

Guys i know that this is not the place for such a thing, but i really wanted to share this with those of you; like me; who appreciate classical opera singing.
Listen to this guys, an unbelievable grand singing by the legendary soprano Maria Callas in "O re, pei sacre numi" from Verdi's opera Aida, in a live recording for the opera performed in Mexico in 1959.
The amazing thing is, Callas sings the E high note and hold it there for 8 beats, drowing everyonce around her in that high E
Just listen to this and let me know what u think:
http://www.youtube.com/watch?v=yCyWEVCCoq8