“The Arts Show this week celebrates ten years of Wicked the Musical with both witches flying by the studio. Dr John Cooper Clarke and Hugh Cornwell will be bringing Buried Treasures. The Times called him the next Pavarotti, one of the world’s greatest tenors, Joseph Calleja, who is starring in the Royal Opera House’s new production of Bellini’s Norma, stops by to say hello. Plus comedian and voice of Ned Flanders and him of Spinal Tap, Harry Shearer joins Jonathan on this week’s Arts Show.”