No?
The loudest sustained concert volume ever recorded was 139 dB, during a sound check for Manowar.
Using this calculator, at 50000m in a straight line, it'd be about "the same as a refrigerator running". 45 dB.
(Digression: I personally had one refrigerator that sounded like a nearby Meshuggah concert in one of my flats when I was at university, but that was a while ago now and my whiteware's sounds are now more like the beginning of Haydn's Surprise Concerto).
In addition, sound waves of different frequencies travel different distances (they attenuate more or less) and even at fractionally different speeds. So the sound's integrity would be lost.
If the loudest ever heavy metal band with all their amp stacks, power supplies, etc, can't do it, I doubt you can either. And the pilot probably can't be protected. But 5 or 10 km is a different story.