Irregular Choice: 'Glissade' Ballerina Heels

Hello peeps, where do I even start with these shoes? Irregular Choice have been producing their 'statement heels' for a good few seasons now and aside from one, I've bought at least one pair from each release. Then came the news that they'd upped their game yet again with the ballerina heel. There's a tiny little ballet dancer (similar to those old cake toppers you used to get-I was ballet obsessed so had them on my birthday cake every single year), encased in a see-through wedge heel.

This would be pretty spectacular on it's own, but like I said, this is a level up on previous 'statement heels'. The dancer actually moves. She pirouettes (on the spot), inside the heel. If that still isn't enough, the shoes play music! There's a key inside the heel (you can pull the ring down to turn, then flip it back up inside the heel to keep it out of the way when using them).
The concept of a music-box heel has just blown me away completely. Shoes can often be a functional item of clothing, but this is more like art or a decorative object. Yet it's still fit for it's purpose, it's just mesmerising.
There were four options available, three named Glissade and a slightly different style Balletomane. That one was more of an ankle boot and covered in varying sizes of pearls. You know I'm a sucker for pearls and initially they were my first choice, but I was more keen on the softer shape of Glissade. The green metallic that I opted for, is such a cool fabric too.
It's got a duo-tone finish, so it flashes between green and purple in the light. You can see the shadowy, contoured sections in my photos are purple and the rest green (sometimes even with blue toned bits where the two colours meet). They lace up with green satin ribbons and have a 5 1/2" heel with 1 1/2" platform. Now for the sizing. I found these extremely small, which I think will catch some people out. I'm so so glad I sized up, because even then they just fit. I could tell whenever I took them out the box, because they look tiny. I didn't have my tape measure handy to measure the inside, but I'd definitely recommend taking the bigger size. I think there will be a lot of returns because of this, so hopefully if yours are too small, there will be a replacement that someone else didn't fit.  Thankfully the metallic fabric feels quite soft and I think it'll stretch out a bit with wear.
I've also popped a little video on my YouTube account, so you can see the dancer in action and hear Twinkle, Twinkle, Little Star.  She moves quite slowly and by the time I was steady enough and ready to record she was nearing the end of her piece (where she slows down further), but you still get the idea.  The two fingers I needed for turning the key, happen to have quite long nails, so it would definitely be easier with shorter nails and/or smaller fingers.  There is a warning that the shoe is fragile and the dancer can break off with hard/heavy wear, so I'm quite anxious about wearing them outside just now.  Maybe once I've become more accustomed to them, I'll know how strong or weak they are.  For now I'm happy just to stare at them!  What do you think?  Can IC top this in the future?