I carried one or two harmonicas around in my guitar case for a few years back in the 60s-70s, with the intention of learning to play. Never quite got it, not well enough to satisfy myself and to keep at it until I could achieve any real skill.

I did use 'em as pitchpipes to keep the guitar in tune, if nothing else, and would lend 'em to players who weren't afrain of catching my "cooties." I always had an "A" harp for use by anyone able to jam with me on blues in the key of E.

Now, my primary interest was in learning blues harmonica, or "cross harp," where there is much more sucking than blowing. I never really got the technique down, not well enough to keep myself entertained, anyway. I was able to play a few simple major-key tunes in "straight-harp" style, but not well enough to stay interested.

If my arthritis gets much worse and I have quit worryin' them strings on the guitar, I might have to give the mouthharp another try one of these days.

Well, good luck and godspeed; I hope you have more persistence and more success than I did.