"I must be singing too loud."
Several pews ahead of me is a young girl who turned and looked right at me as I sang. She frowned, too. I admit I cannot carry a tune but I do love to sing. At her glance I lower my voice and sing much quieter. We're in a church in a city. There are nearly 1000 people at Mass, and sure, she is several pews ahead of me. But still. She looked right at me. It's only later in the Mass that I notice her turning and looking at other people that way too. And they weren't even singing. Imagine that.