My favourite music group

I haven´t got any favourite music group but i like many artists.One of the types of music I like is pop,artist like,David Bisbal, Katy Perry, Shakira, Demi Lovato, Lily Allen ......
Pop is a combination of many genres of music,it was originated in the United States and the United Kingdom.The instrumentation is drums, bass, electric guitar, voice and keyboards.
The two of the most important artits of Pop is Madonna and Michael Jackson. 

http://www.youtube.com/watch?v=QGJuMBdaqIw&feature=kp