Rocklahoma returns to Prior, Oklahoma May 24 & 25, 2019. 2019 Performer LIne Up The lineup for this two-day rock fest includes Ozzy Osbourne, Disturbed, and Shinedown in the headliner slots. Additional performers slated to appear include Bush, Seether, In This Moment, Steel Panther, Jackyl, Asking Alexandria, Tech N9ne, Blackberry…