While the Jam shared the "angry young man" outlook and fast tempo of the mid-1970s British punk rock movement, in contrast with it the band wore smartly tailored suits reminiscent of English pop-bands in the early 1960s and incorporated mainstream 1960s rock and R&B influences into its sound, particularly from the Who's work of that period and also drew influence from the work of the Kinks and the music of American Motown. This placed the act at the forefront of the 1970s–1980s nascent Mod Revival movement. With many of the band's lyrics about working class life, Jam biographer Sean Egan commented that they "took social protest and cultural authenticity to the top of the charts."