It's too difficult. It requires immense talent for ideas, when not to use ideas. And a feeling for instruments, and a feeling for sound, and a natural feeling for proportion, not a didactic feeling for proportion, all these things. It's very, very difficult. It's very, very difficult.
Music is very, very difficult.
I don't even think it should be taught in universities anymore. I don't know what I do. I don't know what I do. Teaching is in a sense what happened with Hindemith. It's not democratic.