I am a huuuge Black Sabbath fan. Everytime I drove my car, I put their CD's on and sang, especially "Fairies wear boots", it sounded like shit, especially with my natural remix-function. But since no one could see or hear it I was fine with it. Over time, I didn't know that was possible, I didn't stutter while singing. And I always did some BBAAAD facial expressions and twitching and shit, it was pure horror. And after a few months I noticed my everyday speech was getting more and more fluent. So yeah, hope that isn't too long for you.