The tags I need that I haven’t made

I keep saying I need to retag stuff, but what tags do I need?

1) Probably tags related to individual pieces of music, both mine and other people’s
2) my viola
3) haendel, vivaldi, etc.
4) steve perry (let’s be honest here), and others for specific artists like rbp, gabriela montero, mark wood, journey, elo, zoe keating, styx, andreas scholl, etc.
5) lessons
6) epiphany (for when I finally figure something out that’s been stumping me)
7) opera (I think I have this one, but I rarely use it)

Probably others …

And then I have to go through and retag posts. Yippee. I’ve got nearly 800 of them.