When three random guys got into an impromptu jam session on the sidewalk outside a grocery store last week, they couldn’t have predicted the worldwide attention they’d receive. A bystander impressed with the music started recording, and that video has nearly 9 million views on YouTube in just four days.

The music wasn’t a planned stunt, as Jimmy Kimmel quickly confirmed, but was really just three random guys who didn’t know one another. Kimmel did, however, bring them on his show, along with several celebrity guests and some horns, to recreate the jam session.

He even broke out a bass clarinet for the occasion…