The comet 67P/Tchourioumov-Guérassimenko "sings" not really, but emits oscillations in the magnetic field that surrounds it. Here is the result after the oscillations have been boosted to be audible to the human ear results. Sounds like a Floyd's synthesizer on "Astronomy Domine".
O.K. Just a little pinprick.
There'll be no more aaaaaaaaah!