kpop1-2, Exercise 2: US bases and Group Sound

Model answer:

US military bases mattered because they were "one of the few places where South Korean musicians could find regular work" and where local musicians could learn American rock and play it for US soldiers. Shin Jung-hyeon debuted on a base in 1957 as "Jackie Shin", was inspired by American Forces Korea Network radio, played up to 40 shows a month at one point, and later said Korean rock was born on the bases.
Group Sound: 1960s Korean bands such as Key Boys, HE6, Pearl Sisters and K'okkiri Brothers, influenced by American and British rock. Unlike the base performers, they began to play for South Korean audiences.
Hedge: the articles say Add4 (formed 1962) is "considered" the first Korean rock band. "First" labels are often disputed, and "considered" shows the claim is not confirmed.

Sources: Wikipedia, Korean rock; Shin Jung-hyeon.