Known for their inflight mischief designed to make passengers smile, Southwest Airlines outdid themselves this week on a flight to Honolulu.

After boarding the plane in Long Beach, California, flyers were delighted on Friday to find a ukulele waiting for them in their seat.

They would soon learn that Guitar Center, the world's largest musical instrument retailer, was behind the stunt, with instructors onboard to give them a free lesson

The ukuleles-arguably the world's happiest instrument, and the one that conjures up the Aloha spirit of Hawaii-is also one of the easiest to learn to play.

It is so easy, in fact, that passengers learned to play the song "Hello, Aloha. How are you?" from start to finish, during the flight.

Each passenger received a Road Runner carrying case containing a Mitchell MU40 Soprano ukulele-and the first-ever in-flight ukulele lesson in the sky.

Passengers then flew across the Pacific Ocean, unified, one chord at a time. (Watch the video below…)

"I've taught students through Guitar Center Lessons since 2014, but never in an airplane. It was inspiring to see how quickly passengers of all ages picked up the ukulele - many with no musical background," said Alexandra Windsor, educational specialist for Guitar Center Lessons.

Even if you weren't on the flight, you can enter the Ukuleles Take Flight sweepstakes for a chance to win round trip air travel on Southwest for a winner and a guest, and two Mitchel MU40 Soprano ukuleles, here at Southwest.fm/ukuleleflight.

Watch the great video from Guitar Center below…

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