I just don't listen to a lot of pop music but depends how you define it perhaps. Someone who listens to mostly classical I generally feel has no idea about most other music genres for example, and to them all rock/jazz is even pop.It seems a lot of respondents are struggling with that clause. I think that's what make the challenge interesting because while pop music of the last 40 years may not be your in wheel house, there likely have been mighty pop song fish that passed over your transom uninvited so big you turned to look and made a lasting impression. Can you remember any of those on cue?