The 1960s onwards: cassettes and the Walkman
In the 1960s, the first cassette records became popular. A big step towards modern technology was the invention of the first portable cassette player the ‘Walkman’, by the Japanese company, Sony in 1979. For the first time, people could listen to their favourite music while they were traveling, doing sports, or going for walks.
來源：MSE指定教材 English In Mind (student's book 2)