The word music derives from Greek; "art of the Muses". Music is both an art form and a cultural activity. Different style of music may emphasize, de-emphasize or omit some of the elements such as pitch, melody, rhythm, tempo and timbre, all of which are known as the colour of music. Music is performed with a vast range of instruments and vocal techniques ranging from singing to rapping. There are solely instrumental or vocal pieces and some that combine singing and instruments. Similarly the recording and reproduction industry has experienced a wide range of changes from the phonograph to MP3 music downloaded from the internet and everything in between.