Generally speaking, and yes anecdotally, singing reduces stuttering to almost near zero levels. The issue that comes with this technique is, do you want to be known as "that" person who lives their life as if it were a musical? For severe stutters, I do not mean to take away from any method that helps you move along in life. But for me personally, and I stutter a lot, I don't know which would be worse...singing to speak or stuttering to speak. I guess it is in the eye of the beholder (and the to the degree with which they stutter).