J-pop (Japanese: ジェイポップ, jeipoppu; often stylized as J-POP; an abbreviation for Japanese pop), natively also known simply as pops (ポップス, poppusu), is a musical genre that entered the musical mainstream of Japan in the 1990s. Modern J-pop has its roots in traditional Japanese music, but significantly in 1960s pop and rock music, such as The Beatles and The Beach Boys, which led to Japanese rock bands such as Happy End fusing rock with Japanese music in the early 1970s. J-pop was further defined by new wave groups in the late 1970s, particularly electronic synth-pop band Yellow Magic Orchestra and pop rock band Southern All Stars. Eventually, J-pop replaced kayōkyoku ("Lyric Singing Music", a term for Japanese pop music from the 1920s to the 1980s) in the Japanese music scene. The term was coined by the Japanese media to distinguish Japanese music from foreign music and now refers to most Japanese popular music. Popular styles of Japanese pop music included technopop during the 1970s–1980s, city pop in the 1980s, and Shibuya-kei in the 1990s.