Math music?

I'm looking for songs about math or tangentially related to math, numbers, or counting. I'm specifically concerned with the lyrical content, not mathematically-devised melodies or instrumental backing (such as mathrock).

Any suggestions? So far I have:

• Mathematics Little Boots
  
• Who's Stopping You? Semisonic
  
• Three Small Words (JatP Theme) Josie and the Pussycats
  
• Finite Simple Group (of Order Two) The Klein Four Group
  
• Wednesday Fischerspooner
  
• Pi Hard 'n Phirm
  
• The Multiplication Song Animaniacs
  
• Sixteen Military Wives The Decemberists
  
• Happy Endings The All-American Rejects