The term MUSIC PLAYER can be described by two crossword solutions: RADIO (5 letters) and STEREO (6 letters). A RADIO is a device that receives RADIO waves and converts them into sound. It was invented in the late 19th century and has been used to broadcast music, news, and other information ever since. A STEREO is an audio system that uses two or more speakers to create a surround sound effect. It was first developed in the 1950s and has become a popular way to listen to music in the home.