Fibonacci in your piano keys. The circle of fifths as geometry. Bach's palindromes. The hidden numbers in music. What if the most interesting math lesson your students ever had was secretly a music lesson? Music and Mathematics is an 8-week curriculum packet that reveals the extraordinary mathematical architecture hidden inside music—fractions in rhythm, geometry in the circle of fifths, Fibonacci sequences in piano keyboards, fractals in Bach fugues, and set theory in 20th-century composition