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  The phonograph, record player, or gramophone, is a device introduced in 1877 for the recording and reproduction of sound recordings.
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  A jukebox is like a large, coin-operated stereo that contains a set of albums and the mechanism to select and play songs. Jukeboxes were very popular in the 1940's.
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  Cassetes were really popular in the 1960's. They were made of polyester type plastic film with a type of magnetic coating.
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  CD Players were popular and were being soold alot! CD Players were being used to play discs with music.
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  The first CD's to ever be sold were inb the early 1990's! A CD is made from 1.2 mm thick, almost-pure polycarbonate plastic and weighs approximately 1520 grams.
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  MP3 Players were being sold for the first time in the 1990's. MP3 Players are made of a variety of metals and plastics.
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  Walkman's are a similar version of the Mp3 Players, but Walkman's were first sold in the year 2000.
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  The first Ipod Touche was very popular in 2001. Ipod Touches are made of stainless steel, which is highly desired by recyclers! Ipod Touches are made by Apple.
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  Apple comes up with the first portable music player. Ipod Touches are made of stainless steel.
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  Beats were and are the most popular headphones in the world. Beats are by Dr.Dre and are high definition headphones that first came out in 2008!