Shania Twain’s Glastonbury experience will feel “surreal”. The 58-year-old star is set to follow in the footsteps of some of her musical heroes by filling the Legend’s slot at the world-famous festival, and Shania is determined to enjoy the experience. She told The Sun newspaper’s Bizarre column: “Even though I know it’s happening, it feels surreal, especially as so many of my heroes have played the slot.” Shania plans to see some other artists in action before she takes to the stage herself. The chart-topping star shared: “I am going to see some of the festival, as I have never been before. I…