The following pictures are part of The Great Chorus at the Royal Ontario Museum, Toronto in 2016 and 2017. About 100 school children from three Toronto schools conducted research in the backrooms of the museum. They produced a libretto based on their research. I am grateful to many people for their support of this project including the students of Lord Lansdowne Public School and Da Vinci Public School, Alan Gasser (choir leader), Krys Verrall (librettist in collaboration with the children), and all the scientists and educators at the Royal Ontario Museum.