Travelers on a flight from St. Louis to Seattle experienced a pleasant surprise when jazz saxophonist Dave Koz, along with his bandmates, spontaneously performed a jam session in the airplane aisle. This musical treat occurred while the plane was stuck on the tarmac, far from their intended destination.

The surprise concert took place on August 11, as Koz and his fellow musicians from the Dave Koz & Friends Summer Horns Tour were en route to Seattle for a series of shows. What was intended to be a straightforward flight faced several setbacks, including an enforced detour to Boise, Idaho. The delay was caused by crew members reaching their working time limits, requiring a change, and encountering a mechanical problem, explained Koz on Tuesday.

After touring since mid-July, the band had faced several delays and had to cancel two performances due to travel complications. However, last week’s hold-up proved especially disheartening for not only the musicians but everyone aboard the flight.

“You could just feel the energy. Everybody was so frustrated,” Koz said.

A flight attendant who saw the musicians bring their instruments on board asked if they’d be willing to play a song while they were stuck in Boise.

A video of their in-flight rendition of Stevie Wonder’s “You Haven’t Done Nothin’,” a staple in their show lineup, spread quickly online. The clip features Koz and fellow saxophonist Marcus Anderson jamming in the aisle, surrounded by other horn players, with Jeff Bradshaw showing ingenuity as he played the trombone in the cramped space.

Passengers are seen smiling and swaying in their seats, with some recording the performance on their phones.

Anderson said it felt good to lift spirits, though Koz admitted being nervous that some passengers might not like “horns playing in people’s ears.”

Anderson compared the invigorating effect of the performance to finishing a rigorous gym workout. The musicians didn’t expect the video to go viral; their intention was purely to uplift the passengers’ spirits. “It was just doing something good for the people,” he remarked.

They performed just the one song, but they knew that was enough.

“It just was right, and it brought everybody together in a way that was very special,” Koz said. “I’ll remember that moment for the rest of my life.”