Yes! The key is the timeline. Play any instrument for 40 years, and it will come easily to you.
The corollary to this is, of course, that if you feel you'll never make it on your chosen concertina system, and you've only been playing it for 20 years, you shouldn't be disheartened. Give yourself 20 more years.
Cheers,
John
Hi John, please send me a package with 40 years, please! (lol) I'm just trying to play for 4 years, but i like it very much, and that's what is the most important for me