It depicts the process by which John and Paul of The Beatles, while on a concert tour through Asian countries, gradually become captivated by the allure of pentatonic music. At that time, I was deeply fascinated by Minao Shibata's work 'The Story of Music's Skeleton' and was diligently developing my own pentatonic algorithm based on his theory. This piece, too, begins in C major, utilizing only white keys, and concludes in a pentatonic scale composed solely of black keys, achieved through 'modulation' based on the 'Skeleton Diagram' proposed by Shibata.