Fabulous Friday: crazy cadenza!

I discovered this on Instagram a few weeks ago and it knocked me out of my chair. Here's Spanish diva Montserrat Caballé singing the end of an aria in Verdi's I Vespri Siciliani. The magic moment happens at 3:20 - - she goes up to a high C, then does a descending chromatic scale from high C down two and a half octaves, down to the F sharp below middle C. And the voice is totally even all the way down. She jokingly called herself The Last Castrato. She wasn't just whistlin' "Dixie."