1) For the most part I don’t listen to single bands or musicians. I listen to songs. That said, my favorite band is still Grave Digger.
Human music in general is real big here in Equestria. It’s so much more diverse. Regarding your feelings for modern music, I think it’s important to keep in mind that most songs, albums, and bands from times past, even successful ones, are lost to obscurity. What you almost always hear are the best of the best. It’s not fair to compare that to modern music as time has yet to pick out the best it has to offer. You’re subjected to everything marketable, which as you’ve noticed does not mean quality.
But for now, favorite song post! I found this one a while ago. Came with a computer. I Ka Barra. Excellent piece. You can find a translation of the lyrics to English here!
2) I’ve… never heard of a school being converted into another building. There’s always more ponies coming into the world. Shouldn’t more schools be built?