When Bill Anderson was helping to write the the title track of Jamey's Johnson's fourth studio album, The Guitar Song, he didn't know it, but he was foreshadowing an event in his own future.

Anderson, Johnson and Vicky McGehee co-wrote "The Guitar Song," which begins, "I'm just a guitar in the pawn shop on the corner / And I'm waiting for someone to play me now and then / My strings are kinda rusty, and I'm a little dusty / Oh, but you'd be, too, if you've been where I've been." On Saturday (Aug. 8), Anderson was reunited with a guitar he lost 50-some years ago, thanks to an Arizona pawn shop's owner.

Mike Grauer, who owns Bell Road Pawn in Phoenix, Ariz., had Anderson's guitar brought into his shop. According to the Tennessean, its owner never returned for it, nor did he respond to Grauer's messages; Anderson, meanwhile, isn't sure how he lost the guitar in the first place.

Grauer noticed the words “This guitar belongs to Bill Anderson” inside the guitar's sound hole and started restoring the water- and mold-damaged instrument. He also reached out to Anderson's secretary to try to reunite the authentic Grammer guitar, given to Anderson by Billy Grammer, with its original owner.

“I thought, okay, this guy runs a pawn shop. He’s going to want about $25,000 for that guitar," Anderson jokes in the video above. "But I couldn't have been more wrong."

Rather than a big payout, Grauer had a simple request: to visit the Grand Ole Opry with his wife for their wedding anniversary.

"That just restores my faith in humanity," Anderson says. "You read and hear so much in the news about things that are bad and people that are negative, and then somebody turns around and does a beautiful, generous thing like this. I bought him a plane ticket as fast as I could."

Grauer and his wife Wendie celebrated their fifth wedding anniversary by attending a special Opry show, at which Anderson introduced them on stage -- and got his guitar back.

“Mike, you and Wendie just have no idea ... you have no idea, what this means to me," Anderson said from stage. "I don't think I ever played this guitar in the Opry House, because we didn't come here until 1972, but I played it many times at the Ryman. It's so special to have it back. Thank you so much. I wish you a wonderful anniversary ... It may be your anniversary, but I got the present!”

Johnson then joined Anderson on stage for a performance of "The Guitar Song," which can be seen in the video above.

“Thank you to Mike, Wendie and Jamey, and thank you to Billy Grammer. May you rest in peace, my friend," Anderson says. "Your old guitar will be well taken care of ... I promise I'll never lose it again.”

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