The Sistine Chapel Choir cancelled its summer 2018 tour of the United States, which included a stop in Los Angeles.

Concert giant AEG Presents confirmed the decision June 8, saying only that the cancellation had to do with logistics.

The “Pope's Choir” was scheduled to perform in several cities across the country this summer, on what would have been its first coast-to-coast tour of the U.S. Just last month, the choir gave a surprise performance at this year’s Catholic-themed Met Gala in New York City.