I recorded myself singing in the tunnel that connects the buildings on the minnesota state capitol complex. This is the first measure of music in the kyrie mass in g minor, which is usually sang by a chorus in a cathedral environment. The tunnel makes it sound exactly like i'm singing in a church.
This was recorded to soundtrack someone suddenly waking up from a nightmare. Small bedroom, close distance, female. Let me know if you use it; i'd be interested to know!.