Rhythm definitely helps with stutterers. I'm a musician and a singer so I totally get it. It's a fun little phenomena. I was in speech therapy for 14ish years and the only thing that I can suggest: breathe. Breathing helps so much. Slow down and breathe. I'm a fast talker so this helps a lot. I block normally as well. And if you can, change the word you want to use (but know you'll stutter on) into another word! Hope this helps :)