The term "pop song," is first recorded as being used in 1926 in the sense of a piece of music "having popular appeal". According to Grove Music Online, the term "pop music" "originated in Britain in the mid-1950s as a description for rock and roll and the "new youth music" styles that it influenced.. pop music (a random sample): 1912 Let Me Call You Sweetheart - Columbia Male Quartet 1929 Sonny Boy - Al Jolson 1936 The Music Goes Round and Round - Tommy Dorsey 1943 White Christmas - Bing Crosby 1955 Mr. Sandman - The Chordettes 1961 Are You Lonesome Tonight - Elvis Presley 1969 I Heard It Through the Grapevine - Marvin Gaye 1971 My Sweet Lord - George Harrison 1977 Sir Duke- Stevie Wonder 1981 (Just Like) Starting Over - John Lennon 1987 Walk Like an Egyptian- The Bangles 1990 Another Day in Paradise - Phil Collins 1999 Livin' La Vida Loca - Ricky Martin 2004 Hey Ya! - OutKast In my humble opinion, one thing that links all of these tunes over 80 years is a well developed melody. But I don't "toss off" these tunes (to get back to the original post), because I don't consider "pop" an inferior form. I think music is either well done or it is not. I try not to get caught up in a category, they're basically meaningless, only the sound and the feel are important. Does the music speak to you or not? If you prejudge a song because it's in a category that you may not like (pop, country, rap, etc), then you deliberately make your world smaller.