Alan Jackson, Rascal Flatts, Dolly Parton, Jo Dee Messina and Trisha Yearwood are among the stars scheduled to perform during "CMA Music Festival: Country Music's Biggest Party," a two-hour ABC special premiering Tuesday.

Taped in June during the annual Fan Fair event in Nashville for country stars and their fans, the ABC special also marks the network TV debut of Gretchen Wilson's new single, "All Jacked Up," the first cut from her follow-up to her multiplatinum debut, "Here for the Party."

Now in its third decade, Fan Fair stretches over four days and brings together some 200 country music artists and celebrities with 130,000 or so of their most ardent fans for 30 hours of autograph signings and photo ops, plus another 70 hours of live music.

"If you're a country music fan, you've got the opportunity to see every single one of your heroes -- anyone you've ever heard on the radio, they're all there," said Gary LeVox of Rascal Flatts, a red-hot band that makes the Nashville fest a high priority each year.

Such relatively free mingling between performers and fans isn't common, but LeVox says country music is more laid-back than other genres.

As part of the special, duo Montgomery Gentry gives a tour of the festival experience through their eyes.

CMA MUSIC FESTIVAL: COUNTRY'S BIGGEST PARTY

Tuesday at 9 p.m. on ABC

-- Zap2It