Yeah I’ve been trying to do the Big Tone Train for 5m/day for the last few months (failing to do it every day, but probably succeeding at doing it 3X/week maybe?) and I’m also noticing huge gains in breathing, tone, and vibrato control.
I’m checking into JP’s stuff for you. Also, for anyone who missed out on SPAH, it’s not too late to change your life as a Harmonica player - I just made a post on Todd Parrott’s Carolina Harp Fest Happening next month.