We have a Walkman in our Technology through Time Collection.
Cassette tapes were developed by the Dutch electronics firm Philips and released in 1963. Initially, they were not initially that popular, as gramophones continued to the most popular method of listening to music at home. Once they began to be incorporated into vehicles, then they started to gain in popularity.
In 1979. the Japanese company Sony released the "Walkman", a portable cassette player. These became so popular in the 1980s that the term "Walkman" became synonymous with a portable cassette player. People enjoyed the freedom of being able to take music with them wherever they went.