Writing about music is like dancing about architecture

Writing about music is like dancing about architecture means that it is impossible, or very hard, to explain something in one way using another way. To explain in simpler terms, it is like trying to explain a song by dancing. You can move your body in different way, but you can’t actually explain the song. It is the same for architecture: it is impossible to describe the feel of a building just by dancing. So, writing about music is like trying to explain something that is impossible to explain.