According to a PhD researcher, often people who stutter don't focus on the prosody (like rhythm, intonation, stress patterns etc), whereas non-stutterers do focus on prosody in order to maintain fluency. I had a discussion about it where we talked about the fact that women usually show more emotions than men and you would think that driving your speaking actions on emotions is a bad thing (like fear). But in general women stutter less than men and research found that women outgrow stuttering more often than men. I think a sound argument is that women tend to turn emotions (negative effect) into prosody, a fluency law (positive effect). In contrast, men hide their emotions more often and could lead to developing a habit (and unhelpful beliefs/attitudes) of holding back speech developing a stutter disorder. I think, when people who stutter - start singing - that we focus more on prosody (like melody, rhythm etc). Prosody works like a distraction mechanism that interrupts '***worrying about feared letters or feared situations***'. Because we are so focused on keeping up with the flow and rhythm, that we often block less when singing (in comparison to speaking). That's just my interpretation, maybe you look at it differently. It's similar to [research](https://www.reddit.com/r/Stutter/comments/xq5f4v/what_are_your_thoughts_on_this_research_choral/) that found how 'speaking fluently' when chorally speaking leads to left-side dominant hemisphere speaking by not worrying about speech errors and instead, focusing on keeping up with the melody or rhythm.