What is Rock?

By definition Rock & Roll is a genre of music that consists of a combination of styles such as blues, jazz, gospel music, country, and swing.  Although that is true my definition in different in a view categories.  To ME to think of something as Rock & Roll it has to energize me and sort of pump me up to a certain degree.  I also think of guitars when I think of Rock & Roll, I guess they are not necessary but they definitely help with the feel of the music.  One thing that also sticks out to me when I think of Rock & Roll is superstars.  For a band to be famous by means of Rock & Roll there has to be a superstar, not just a couple guys who work well together.