Twisted Sister to rock Bloodstock Bloodstock have confirmed that Twisted Sister will be the final headliner at this year’s Bloodstock Open Air. Also joining them on the bill at this year’s festival will be Edguy and Ensiferum. BOA is thrilled to confirm the final headline slot for the 10th anniversary festival will be taken by legendary US metallers Twisted Sister. Capturing the spirit of rebellion, the multi-million selling New Yorkers enjoyed a hugely successful career, adored by metal fans and feared by the “moral right”, before disbanding in the mid-80’s. Re-uniting in 2001 to headline the New York Steel benefit concert in the wake of the Sept 11th attacks, the…