Fibonacci series: in the verses, the vocals follow the Fibonacci series in the number of syllables. Listen, starting at 1:37, at the number of notes/vowels in the lyrics: "black", "and", "white are", "all I see", ... The number of syllables are 1, 1, 2, 3, 5, 8, 5, 3. Then, at 2:04, the numbers are 13, 8, 5, 3.

#MusicMonday