Songs about Pi
While there are no songs that are specifically about the mathematical constant pi, there are some songs that have lyrics or titles that reference pi or have a mathematical theme. Here are a few examples:

"Pi" by Kate Bush  This song, which is featured on Kate Bush's album "Aerial", features the lyrics "3.14159, this is pi, followed by 2653589", which are the first few digits of the pi sequence.

"Mathematics" by Mos Def  This hiphop song features lyrics that reference mathematical concepts and theories, including the Fibonacci sequence, pi, and Pythagorean theorem.

"The Number Song" by DJ Shadow  This instrumental track features a sample from a math professor discussing the value of pi.

"Counting Blue Cars" by Dishwalla  While this song doesn't specifically reference pi, the lyrics "tell me all your thoughts on God, 'cause I'm on my way to see her, so tell me am I very far?" reference the number 314, which is the beginning of the decimal representation of pi.

"The Calculus Affair" by The Hives  This song, which is inspired by the Tintin comic book of the same name, features lyrics that reference calculus, trigonometry, and other mathematical concepts.
These songs all have a mathematical theme or reference, and while they may not directly sound like pi, they are still a fun way to celebrate mathematics and its importance in our lives.