Some real-life country singers are mixing with the fictional stars on tonight's episode of "Nashville." 

Kip Moore says he really enjoyed taking part in the ABC drama, but wouldn't exactly give his performance a rave review. 

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Vince Gill is also making a guest appearance on the show.  He says he's a "Nashville" fan, and had fun "hanging out with the cast and crew" during the taping.  Vince adds that the role wasn't all that demanding, since he's playing himself. 

In addition to Moore and Gill, the episode will also feature Pam Tillis and the Black Keys' Dan Auerbach.  They're all portraying themselves as guests at a surprise birthday party for Charles Esten's character, Deacon.  Their scenes were shot earlier this month at Nashville's Bluebird Cafe. 

"Nashville" airs on ABC at 10:00 p.m. Eastern.