... hard rock (extremely loud and electricallyamplified) and mellow rock (softer, and with acoustic instruments). Rock blended with reggae,which emerged from Jamaica around 1972, and is a mix of rock, soul, ... History of Rock and Roll INTRODUCTION Rock and Roll started after the year 1955 with its rootsbeing in Blues,Gospel, and Jazz. This influenced vocal music, ... music,guitar screeches, and on stage smashing of instruments. Duringthis time, rock operas and rock musicals became popular, such as Tommy, The Who and Hair.Formed in 1962 the Rolling Stones started...