rihanna has sales exceeding 230 million tapes worldwide
the cassette soon became a popular medium for distributing prerecorded musicinitially through the philips record company and subsidiary labels mercury and philips in the us
like the transistor radio in the 1950s and 1960s the portable cd player in the 1990s and the mp3 player in the 2000s the walkman defined the portable music market for the decade of the 80s with cassette sales overtaking those of lps