(Image (c) Danny Kaan) Opera Holland Park features several collaborations thorughout its 2021 summer season, offering much-needed work to a myriad of freelancers from across the theatre world. Charles Court Opera will join OHP for a “Pirates of Penzance” in August; British Youth Opera will bring Rossini’s “L’occasione fa il ladro;” Waterperry Opera Festival are coming to town with a {…}