"Monster" is Pink Lady's eighth single release, and their seventh number-one hit on the Oricon charts in Japan. The single sold 1,600,000 copies, and was number one for eight weeks. It also peaked at
Pink Lady is a Japanese female pop music duo of the late 1970s and early 1980s, featuring Mie and Keiko Masuda. In Japan, they are remembered for a run of pop-chart hits from roughly 1976 to 1979, but
Mie (left) and Kei (right) in 1979
Pink Lady in 1980
Pink Lady and Jeff Altman in a promotional picture of their eponymous show, 1980