Big and Rich may have taken some time away from touring together, but the country duo proved they haven't lost their magic during an unrelenting performance of 'Fake I.D.' at the CMA Music Festival. The performance -- televised Sunday night after being taped in Nashville in June -- included a cameo by Muzik Mafia member Gretchen Wilson.

John Rich and Big Kenny Alphin took the stage in familiar costumes: Big Kenny was wearing his trademark top hat, while the more conservative Rich stood under a black cowboy hat. Rich trimmed the chin hair however, opting instead for a thin mustache that drags down the sides of his mouth. 'Fake I.D.' is the duo's most recent single, and will be included on the upcoming 'Footloose' movie soundtrack when the film hits theaters in October.

Wilson is also included on the studio version of the song, and she walked out about two-thirds of the way through the song wearing a simple black t-shirt, ripped bluejeans, baseball cap and knee-high black boots. Her voice was drowned out some by her partners and the band, but during the moments you could hear her it was clear she was giving an inspired performance. Big and Rich are touring together this summer. The 'Footloose' soundtrack will be available on Sept. 27.

Watch Big and Rich Perform 'Fake I.D.' With Gretchen Wilson on the 'CMA Music Festival' Special