Originally called "wireless telegraphy". (5)
A record player's needle is made of this. (7)
A popular way of listening to tapes music in the 1980's. (7)
Known as a "talking machine". (10)
Album selling the most copies worldwide. (8)
The most common device for playing recorded sound from the 1870s through the 1980s. (10)
Device once used for personal computers as well as music. (8)
A record player's needle is made of this. Diamond
A popular way of listening to tapes music in the 1980's. Walkman
Album selling the most copies worldwide. Thriller?