Imagine you are working with a fugue of Bach or any other composers, which is well-written, clever, and perfect. Such music:
- Uses the minimal amount of thematic material.
- Includes very clever counterpoint, using various techniques such as stretto, inversion, etc.
What word should I use to describe such music in a formal context? I cannot say it is "studied" because this term is too broad. I cannot say it is "clever" because this is too informal. I cannot say it is "mathematical" because only people who are familiar with maths understand what I mean.
What word should I use instead of "clever"?