In March 1991, Spitz released their first single "Hibari no Kokoro" and the self-titled debut album simultaneously on Polydor Records. Although their early efforts failed to attract public attention until around 1994, the band eventually came into prominence with a single "Robinson", released in April 1995 and sold in excess of 1.6 million copies in their homeland. It was followed by their 6th studio album "Hachimitsu", which was released in the same year and achieved mainstream success, immediately topping the Japanese Oricon chart and selling approximately 1.7 million copies to date. It earned the Best Album category in the 37th Japan Record Awards by the Japanese Composers Association on New Year's Eve of 1995, and received a quadruple platinum status by the Recording Industry Association of Japan in 1997.