And it sounds like nothing else we’ve ever heard
A cellist and an air steward on a flight to Denver teamed up to treat the other passengers to an improvised cello/beatbox duet of the Bourrée from Bach's Cello Suite No 3.
The flight attendant, known only as Maximilian, can be seen crouching in front of cellist Francisco Vila on the Southwest Airlines flight in the video taken earlier this month, as the pair put an inventive spin on a Bach cello piece.
Maximilian is apparently no stranger to entertaining the crowds on his flights with his impressive beatboxing, but this is the first time he's collaborated with a passenger.
Watch the whole video here: