David Hatch and Stephen Millward define pop music as "a body of music which is distinguishable from popular, jazz, and folk musics".
 According to
Pete Seeger, pop music is "professional music which draws upon both folk music and fine arts music".
 Although pop music is seen as just the
singles charts, it is not the sum of all chart music. The music charts contain songs from a variety of sources, including
novelty songs. Pop music, as a genre, is seen as existing and developing separately.
 Thus "pop music" may be used to describe a distinct genre, aimed at a youth market, often characterized as a softer alternative to
rock and roll.
 Musicologist Allan Moore surmises that the term "pop music" itself may have originated from
 Additionally, it's important to note that pop music is always evolving, which means that the definition of pop music can change, too.
 It's also important to be cognizant of the distinction between pop music and popular music. According to The New Grove Dictionary Of Music and Musicians, popular music is defined as "the music since industrialization in the 1800's that is most in line with the tastes and interests of the urban middle class."