When Tim Mangan met Gustavo Dudamel, hilarity ensued:
I sing a random note and he tells me it's an A, "but a little bit low." I pick up a score from the table and ask him to sing a phrase from John Adams' "City Noir." He does – it starts on a low F, at the bottom of the bass clef – and runs over to the piano to check his accuracy. Right on the button.