Just a couple years late. Can’t seem to find an official clip online anywhere. This is a nice live version tho with Yukimi doing some cool dancing. It’s actually kind of interesting to see what singers do when they aren’t singing. Basically being on stage is a weird unreal zone where you can do literally anything? Which is strange because when you’re up there you feel so constrained, but actually mostly no one cares and it doesn’t matter.
The two best pieces of advice I’ve ever gotten about singing on stage is to remember that the audience actually wants you to do your best, which is totally true, and the second is to control your breathing beforehand. Breathing exercises to remind yourself to relax are incredibly useful before any kind of public speaking or performance and I still do them before lectures and presentations. Your body breathes too hard, too much if you let it, so you need to slow it all down and reign it in a bit. It’s probably half physiological and half just having a sense of control and something to do and focus on, but they feed into one another.