Yes this is all true. I feel like when i’m singing a song I’m just feeling the beat rather than the words and i’m not focusing on the words so they just flow out very fluently. Also this is probaly why a lot of people who stutter use their foot as a type of metronome to be able to get out words because it’s like a musical beat to them, and it stimulates their creative side of their brain rather than the half that’s responsible for language. So I believe that by me being a neurologist I can study this phenomenon in way better detail and possibly come up with a breakthrough one day