Therefore, the essential features of the punk musical aesthetics contribute to an understanding of the difference between the punk rock and the other popular rock music styles of the time such as the style of the Beatles. Significantly, "Anarchy in the U.K.," the first single of the Sex Pistols, as well as "White Riot," the first single of the Clash, divulges the crucial musical and lyrical features of the punk which, in turn, illustrate the distinction of the punk music to the popular music of the day. One notices the quality of fast and bare organization of music in them which reflects the style of the garage rock of the 1960s. The relatively shorter songs of "Anarchy in the U.K." as well as "White Riot," accompanied by stripped-down instrumentation also indicate the musical elements in the punk rock. These features set the punk rock bands apart from the popular music of the time and the decisive result of this music was undeniably far-reaching. As Frith and Horne suggest, "Punk rock was the ultimate art school music movement.