The Beatles were an English rock band formed in Liverpool in 1960. With members John Lennon, Paul McCartney, George Harrison and Ringo Starr, they became regarded as the foremost and most influential band in history. Rooted in skiffle, beat and 1950s rock and roll, the group were integral to pop music's evolution into an art form and to the development of the counterculture of the 1960s. They often incorporated classical elements, older pop forms and unconventional recording techniques in innovative ways, and later experimented with several musical styles ranging from pop ballads and Indian music to psychedelia and hard rock. As the members continued to draw influences from a variety of cultural sources, their musical and lyrical sophistication grew, and they were seen as an embodiment of the era's sociocultural movements.