Great post, and great video and topic.
I like the point the video makes, and the tie to our primal history, and that only reaffirms my experience that for me the key is to make the performance be about the music itself not me. With that the music happens, and ends up being/feeling more sincere and honest. And I even get to enjoy it more as I listen along with the audience...
Since you are already comfortable in front of groups, yet still feel uneasy about playing with a Uke, and for others that may be interested, I highly recommend reading Kenny Wenrers excellent book Effortless Mastery
http://kennywerner.com/effortless-mastery
I first read it when I started studying classical guitar about 6 years ago. Talk about performance anxiety with classical guitar in particular, you can feel like the red dot on a target.
The rest of these comments apply mainly classical guitar, but they can apply to the Uke if we take it too seriously...
Usually, you play by yourself very intricate, and precise, and the audience usually knows the music and can be critical... All this goes through your head as you try to play Bach or what not... Then if you forget your place etc...
Well with this book, and over time, I've come to feel comfortable playing in public. And have stopped the running commentary in my head.
In fact as the book suggests, the optimal feeling/experience is if you can hear the music, and enjoy it much like the audience does. When you perform music, all thoughts of what's wrong, right etc have to be left behind in the practice room.
And if you mess up so what, the sign of the best musicians are the ones that hop right over any mistakes like stepping over a puddle and continue with the music. It's all about the music, not us.
Ironically, what I do find even more difficult, is making videos as I hate mistakes since they will always be there. However, once posted I've come to realize that even those mistakes are just like a live performance, part of the fabric of music.
And as it turns out, even though I can be overly critical with myself, and still a bit reserved, I've come to love the warmth of a formal stage. I find it strangely comforting, like being under a pile of fresh dried laundry...
In fact I find it easier than an informal performance since in those cases people are not really focused, talk, tslk to you while you are trying to make music etc...
As an improvisational comedian as well as a teacher, I have no fear or qualms about getting up in front of a group of people (small or large) and perform. However, when it comes to playing the uke, I still have a bit of hesitation. The feeling of “Am I good enough?” is quite a hindrance. I suppose I’ll never know if I never do it. The first time will be quite harrowing, but after that, it’ll no longer be “the first time”. Should be a lot easier after that point, because that fear of the unknown will be gone.
And, after all, it’s about personal satisfaction and joy, yes?