Group sounds

Group Sounds
Stylistic origins	Rock and roll, beat music, British rock, kayōkyoku
Cultural origins	mid-1960s Japan
Typical instruments	Guitar, bass guitar, drum kit
Derivative forms	J-pop

Group Sounds (G.S.) is a genre of Japanese rock music which became popular in the mid to late 1960s and initiated the fusion of Japanese kayōkyoku music and Western rock music. Their music production techniques were regarded as playing a pioneering role in modern Japanese popular music.

Fōku (folk) and New Music became famous in Japan in the 1970s, but new rock bands survived as "New Rock" in Japanese underground music. The origin of modern Japanese rock music was usually regarded as New Rock. Videos of New Rock bands' concerts were very rare.

...
Wikipedia