I’ve sung with my choir a version of Gregorio Alberti’s “Miserere” edited by John Rutter, who includes a rather lengthy and somewhat technical commentary about how the current version of this piece came about. Rutter does not include the most famous story about how the piece became available to the general public, though, a tale about the child prodigy Mozart and his ability to write down music from memory, even music that he had heard only once. I’ll get to that story in a minute. (Don’t you just hate it when writers do that?)