Slow Rock music is a genre of popular music which came into the mainstream in the 1960s. It has its roots in the 1940s and 1950s, rock and roll, rhythm and blues, country and also called folk, jazz and classical music. The sound of rock often revolves around the electric guitar, bass guitar, drums and keyboard instruments as the Hammond organ, piano, or, since the late 60's synthesizers. Rock uses simple rhythms unsyncopated usually within one meter 4 / 4, with a repetitive snare drum back beat on two and four beats. [1] guitar solo a prominent place in rock music, keyboard, saxophone and harmonica blues style is also sometimes used as solo instruments. In its "purest form", it "has three chords, a strong emphasis has beaten back, and a catchy melody."In the years 1960 and 1970, the rock has developed a variety of subgenres. When it was mixed with popular music has created a folk rock, blues to create blues-rock and jazz to create jazz-rock fusion. In 1970, the Seoul inspired rock, funk and Latin music. In addition, the 1970, the rock has developed a number of subgenres, such as soft rock, glam rock, heavy metal, hard rock, progressive rock, rock and punk. Rock subgenres emerged in 1980 with a new wave of hardcore punk and rock. 1990, sub-genres of grunge rock, brit pop, indie rock and nu metal.

A group of musicians specializing in rock music is called a rock band or rock group. Many rock groups consist of an electric guitarist, lead singer, bass guitarist, and a drummer, forming a quartet. Some groups omit one or more of these roles or utilize a lead singer who plays an instrument while singing, sometimes forming a trio or duo; others include additional musicians such as one or two rhythm guitarists or a keyboardist. Rock bands from some genres, particularly those related to rock's foundations in rock and roll, include a saxophone. More rarely, groups also utilize bowed stringed instruments such as violins or cellos, and brass instruments such as trumpets or trombones.