the music of louis jordan and his tympany five is an example of
Louis Jordan With his dynamic Tympany Five bands, Jordan mapped out the main parameters of the classic R&B, urban blues and early rock-and-roll genres with a series of highly influential 78-rpm discs released by Decca Records. These recordings presaged many of the styles of black popular music of the late 1940s, 1950s and 1960s and exerted a strong influence on many leading performers in these genres. Many of his records were produced by Milt Gabler, who went on to refine and develop the qualities of Jordan's recordings in his later production work with Bill Haley, including "Rock Around the Clock".
Pop music Harmony and chord progressions in pop music are often "that of classical European tonality, only more simple-minded."[20] Clichés include the barbershop quartet-style harmony (i.e. ii – V – I) and blues scale-influenced harmony.[21] There was a lessening of the influence of traditional views of the circle of fifths between the mid-1950s and the late 1970s, including less predominance for the dominant function.[22]