When Kacey Musgraves served as the opening performer at the new, 4,500-person capacity music venue The Pinnacle in Nashville on Thursday night (Feb. 27), she featured a new, unreleased song as part of her set — a song she wrote about her Australian cattle dog, whom Musgraves told the audience “is so spicy, I named her Pepper.”

Kacey Musgraves premieres new song ‘She’s My Bitch' during intimate performance at new Nashville venue the Pinnacle.

The first musician set to perform in a new entertainment venue will take center stage Thursday night.