I got three voices - my regular voice, my speech voice, and a radio voice. I don't much care for my regular voice, my speech voice comes deep in the chest and is hard to keep up for long, my radio voice is a combination of deep voice with some nasal thrown in. My wife has a totally awesome voice when recorded - one imagines all kinds of things on playback.
The Hawaiians have all kinds of non-blood or distant relationships. These are called "hanai." This can mean a formal adoption or an informal understanding of taking care of or raising other people's children. I believe the roots of this practice comes from the Chinese and Hawaiian cultures.