<P> From about 1967, the term "pop music" was increasingly used in opposition to the term rock music, a division that gave generic significance to both terms . While rock aspired to authenticity and an expansion of the possibilities of popular music, pop was more commercial, ephemeral, and accessible . According to British musicologist Simon Frith, pop music is produced "as a matter of enterprise not art", and is "designed to appeal to everyone" but "doesn't come from any particular place or mark off any particular taste". Frith adds that it is "not driven by any significant ambition except profit and commercial reward (...) and, in musical terms, it is essentially conservative". It is, "provided from on high (by record companies, radio programmers, and concert promoters) rather than being made from below...Pop is not a do - it - yourself music but is professionally produced and packaged". </P> <Table> <Tr> <Td> </Td> <Td> The Righteous Brothers--"You've Lost That Lovin' Feelin"' (1965) As of 2011, "You've Lost That Lovin' Feelin"' ranks as the most frequently played song in US radio history, described by music writers Nick Logan and Bob Woffinden as "the ultimate pop record". </Td> </Tr> <Tr> <Td_colspan="2"> Problems playing this file? See media help . </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> The Righteous Brothers--"You've Lost That Lovin' Feelin"' (1965) As of 2011, "You've Lost That Lovin' Feelin"' ranks as the most frequently played song in US radio history, described by music writers Nick Logan and Bob Woffinden as "the ultimate pop record". </Td> </Tr> <Tr> <Td_colspan="2"> Problems playing this file? See media help . </Td> </Tr>

The first instance of pop music in america was