Country music icon Alan Jackson surprised guests at the opening of a Nashville restaurant by playing an unannounced gig on Wednesday night (10Sep14).

The Grammy winner was a primary investor in Tennessee venue Acme Feed & Seed's multi-million dollar renovations, and to celebrate the grand opening of the restaurant and live music club, Jackson took to the stage to perform.

He told the stunned crowd, "Thank y'all for letting me crash your party! I've loved (neighbourhood) Lower Broadway since I first came to Nashville and it was still a little bit shady. This is a much nicer place than I used to play down here back in the day."

Jackson then played his hits Don't Rock the Jukebox, Good Time, and It's Five O'Clock Somewhere, and even a brief cover of Merle Haggard's Back to the Barrooms Again.

Jackson's involvement with the venue stems from his love of "old things," as Acme Feed and Seed is a century-old brick Victorian building in the heart of Nashville.

He tells People magazine, "I love old things. I love old cars, old boats, old music and old buildings. I've always loved that building, since back when it was still a farm store. It was sad to see it empty so I am proud to be a part of this."