Conan O"Brien got the Mormons wrong and right
Conan and company got it just right in the end, though. Explaining that the Mormon Tabernacle Choir couldn't appear on the show, Conan invited the "Mormon Tappernacle Choir" out to finish the segment with a fantastic dance break. The Tappernacle Choir isn't real, but Mormon arts culture has a strong performance emphasis, with an especially vibrant tradition of dance. Ref. Source 5