Gettysburg country radio station WGTY 107.7 announced the four local acts who won the chance to perform Friday, before Jamie Lynn Spears at The York Fair.
Brittany Opperman finished fourth in the voting and will perform at 7:35 p.m.
Lindsey Erin, who finished third, will go on at 8:10 p.m.
Kayla Kroh, the runner-up, will play at 8:45 p.m.
Olivia Castriota, the contest's winner, will take the stage at 9:25 p.m.
Eight acts entered the competition. The winners were selected by fan voting on WGTY's website.
The York Fair opens Friday and runs through Sept. 14.