Assertion: pop music's root | /r/HasProperty | traced
Facets:
Source sentences:
text: J-pop (Japanese pop) developed in Japan’s music industry in the 1990s but its roots can be traced back to the early 1960s pop and rock music.
text: The roots of this tradition can be traced back to the beautiful music and easy listening stations of the 1960s and 1970s.[citation needed]