This soprano inhaled helium, and then sang a virtuosic Mozart aria

Take a voice-altering gas, one trained singer, and some cracking Mozart coloratura. This is going to end extremely well.

Opera singer helium

First up, Mozart

What does helium do to your singing voice? American soprano Christina Elizabeth shows you, belting "Deh Vieni Non Tardar" from Mozart's The Marriage of Figaro (with a hefty lung-full)

Breathing balloons at King's

The singers in the choir stalls of King's College Cambridge have been on it as well* (*possibly)

Full Choir, in helium harmony

They take it exceptionally seriously.

Because this is serious business.

Stop sniggering at the back!

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