Originated as “Rock & Roll” in the United States, Rock music has been rocking the world since the 1950s. It is a form of music that started actually around string instruments, but now uses other modern instruments too making it a little difficult to give it an accurate definition. Its loud and strong beats make it popular among the youths. Some of the rock stars who have popularized the culture include Little Richard, Bill Haley and Chuck Berry while rock bands like Pink Floyd, The Doors, Metallica, Nirvana and Megadeth are the modern bands who have taken the culture by storm.