Assuming emmett is required, and james is required, and o'leary is required, the following result was found.
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E. (n. d.). About the Virtual Choir. Retrieved from: http://ericwhitacre.com/the-virtual-choir/about authors: Emmett James O'Leary author_ids: 2838 authors: Emmett James O'Leary author_ids: 2838