person 1: what sort of music would you say area 11 do?  person 2: oh, they are gaijin rock
gaijin rock is essentially japanese rock music (j-rock) but sang in a non-japanese language - typically english
"person 1: what sort of music would you say area 11 do?  person 2: oh, they are gaijin rock" What is the definition of "gaijin rock"?