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        vinyl is a disc that has music imprinted onto it. This music is read by something called a stylus. - 
  
  
        A cassette is a closed plastic unit that contains audio tape, video tape, film and many more. you can use a cassette tape in a recorder. playback device and other machines. - 
  
  
        A portable CD player uses compact disks to play audio. - 
  
  
        MP3 is an audio file that makes the final file size smaller by applying a compression algorithm. Sometimes you can lose certain parts of your file as some of the original data can be lost during compression. - 
  
  
        YouTube is an online steaming service that can stream anything that is uploaded to it through creating a YouTube channel.