During the 1950s a new type of music called Rock and Roll emerged and revolutionized music tastes in America (specially teenagers) and ever since then the music world changed. When it first emerged it was just the blues combined with electrical guitars. Later, it mixed the blues with country, western music and gospel music. This type of rock music is called Rockabilly (A popular form of music originating in the southern US in the 1950s by combining the elements of Rock and Roll with country music.) However, the emergence of Rock and Roll is a long story.