Country fans visiting the Grand Ole Opry Saturday night (Oct. 17) got a very special treat when Merle Haggard unexpectedly showed up on the stage.

According to a press release, the country legend wanted to honor the Opry’s 90th anniversary celebration on the famed stage. His surprise performance included "Big City," "Silver Wings," "I Think I'll Just Stay Here and Drink" and "The Fightin' Side of Me."

This month, the Grand Ole Opry celebrates 90 years, and Haggard is just one of many country artists taking part in the festivities. Four concerts began the celebration on Oct. 2 and 3. Meanwhile, upcoming performances at the venue include Rascal Flatts, Loretta Lynn, Alison Krauss, David Nail, Old Crow Medicine Show, Radney Foster, Montgomery Gentry, Easton Corbin, Kacey Musgraves, Lauren Alaina, Del McCoury Band, Lorrie Morgan and many more.

Haggard will join Willie Nelson on the road today for the duo's Django and Jimmie Tour supporting their duet album of the same name, which was released this past June. The tour kickoff was recently pushed back after Nelson was dealing with minor health issues. According to Nelson's son Lukas, the legend is doing great and the remaining tour dates are scheduled as previously planned.

You Think You Know '90s Country?

Quit Complaining About Modern Country Music