Can you Hum and Hold your nose closed at the same time?

Go ahead, I'll wait. Grab ahold of your schnoz, your sniffer, your proboscis, and try to hum your favorite song. Or just any old song, for that matter. Maybe it's a classic childhood choice like Twinkle, Twinkle Little Star. Maybe it's something off the new Taylor Swift album. Maybe it's Ozzy Osbourne's classic opening verse line from "War Pigs" if so, I salute you. But it doesn't matter, because no matter what you try to hum, I bet won't be able to do it. Hum really hard, really soft, at a high pitch, a low pitch, open-mouthed, closed-mouthed.

Well did you do it?