This is a bit off-topic, but I decided to search for Our Lady of the Sun, as I had never heard of that title before. I came up with a link to the church itself, which is rather an interesting read from a cradle Novus Ordite.
See for yourself:
http://shipoffools.com/mystery/2008/1514.html
That was a good wrote-up, but it is at least ten years old (Nov. 11, 2007). I hope the choir has improved.
Knowing Phoenix, the choir may have been affected by seasonal allergies to cacti, grass, and wind from the Round-up sprayed areas, especially all those agricultural areas that surround Phoenix. Last time I visited Phoenix in April 2015, I became very sick, and could barely talk or sing.