Pianists don't find beauty in written maths, but mathematicians don't usually find beauty in sheet music either. It is the performance, accesible to our senses, that can convey beauty even to amateurs.
Accidentally - in the parts of maths where the concepts can be visualized, such as fractal theory, non-mathematicians seem to love what they see.
People in general perceive music as "what is being played" vs. mathematics "what is being written on a page". This is the common concept, but it is incomplete. Music has its boring parts (notation), so does maths, but the general public is prone to confuse maths as a whole with its "sheet music".
Accidentally - in the parts of maths where the concepts can be visualized, such as fractal theory, non-mathematicians seem to love what they see.