Some of the most memorable links between mathematics and the arts are found in song-lyrics. For example, "That's Mathematics" by retired American musician, singer-songwriter, satirist, and mathematician Tom Lehrer (now aged 93): Here is the opening stanza (the complete lyrics are found at this link):
When you're trying to sleep
When there's something to share
When you're folding a sheet
That's mathematics! More mathy lyrics (by Lehrer and others) are found here.
A current math educator offers us lots more lyrics to learn from and enjoy; from Larry Lesser -- a professor at the University of Texas in El Paso -- is a long-time creator of math-music works. Here's a link to a list.
This blog also has previously published lots of Lesser's fine work; here's a link.