Subconscious singing

My family has an affliction. I call it The Singing Disease. We sing all the time. This is mostly evident when my younger siblings and I are at home for breaks. When the three of us and our parents are all in the house together there is probably at least one of us singing at pretty much any point in time (and many times more than one). Some of my family members sing normal songs. This would include my sister Bryn and my brother Tyler. They go around the house singing or humming typical songs that most everyone can understand. I call them the Normal Singers. Then there's my dad. He combines singing with a strange type of humming. I call him the Hum-Singer. I've never heard anyone else in the world try to Hum-Sing. I'd really like to explain the sound to you all, but I fear there are no words to express it. Here is my humble attempt. The Hum-Sing isn't really singing or humming. It's more like half humming and half doing that thing where you use dum-dee-dee-dums to "sing" a song instead of actual words. Most of the time Dad Hum-Sings with his dum-dee-dee-dums to hymn-like tunes. I'm not sure if any of that explanation got the idea across, but maybe I'll just have to get a recording of it during Christmas break. Then there's the Subconscious Singers of the family, my mum and me. We have the ability to sing without even know we're singing. Now if you are the one subconsciously singing there is no problem. You can be going about your business and joyously singing to your heart's content with no problems. But if you are listening to an unconscious singer, you will probably go crazy. This is because the Subconscious Singer does not usually sing typical songs. I know, from years of my mum driving us to a town 40 minutes north for music lessons two or three times a week, that being subjected to unconscious singing for a long enough period of time with no way to escape will drive you batty. Despite this knowledge I still have trouble stopping myself from engaging in subconscious singing, especially when I'm around family members or people I'm completely comfortable with. I think my siblings can attest that this is true. One time I submitted them to a five minute rendition of my thoughts on hot dogs. It was only when they told me what I'd been singing that I realized I'd joined my mother in the status as Subconscious Singer. And now you know just a little bit more about the weird and wacky family I come from.