User:Swolodkin/sandbox

Rock music is traditionally built on a foundation of simple syncopated rhythms in a 4/4 meter, with a repetitive snare drum back beat on beats two and four.[11] Melodies often originate from older musical modes such as the Dorian and Mixolydian, as well as major and minor modes. Harmonies range from the common triad to parallel perfect fourths and fifths and dissonant harmonic progressions.[11] Since the late 1950s,[12] and particularly from the mid-1960s onwards, rock music often used the verse–chorus structure derived from blues and folk music, but there has been considerable variation from this model.[13] Critics have stressed the eclecticism and stylistic diversity of rock.[14] Because of its complex history and its tendency to borrow from other musical and cultural forms, it has been argued that "it is impossible to bind rock music to a rigidly delineated musical definition."[15]