Tomatis

So I've been trying to listen more carefully to when I sing.
I've been playing around. When I cover my left ear, it sounds different than when I cover my right ear. I can't seem to hear as well when my right ear is covered, and i used to notice that even before the reading and I thought I just had bad hearing in my left ear or was better with my right ear. But it seems to make sense, unless it doesn't and I really am deaf in that ear. I've also been trying to pay attention to the other pitches that come out of different pitches that the singers aim for.