Music
Music can perhaps be seen as an art form whose medium is sound. There are many elements to music such as pitch, melody, rhythm.
The performance ortypes of muic created vary immensely according to the culture and social context at that moment in time. Some genres of music can be quite controversial as proved in the 70's when Punk arrived on the scene. This was seen as being political with anti establisment lyrics.
As artists or groups get more popular they inevitablt tkae their act on tour and sing their best known songs 'live' to an audience. As well as selling singles and albums, the artist can make a lot of money by performing live to the public. Some bands who do more touring than singles nowadays are older bands such as The Rolling Stones, The Who and U2.