I forgot one thing. As I was playing the tachleta (keyboard) for the Sacrament song, the "d" began to move. I thought it was just the heat, so I followed this note. Suddenly I realized that a fly (mosca) was walking in a perfectly horizontal line along the D line of the staff. I was "playing" the fly. They were the wrong notes, of course. I tried hard not to laugh in the middle of the Sacrament song. This is just one of hundreds of silly situations we've encountered.