Used Cassettes (유즈드카세트) are a multinational quartet based in Seoul.
Strictly speaking, it is difficult to call them Korean band. But they do sing in Korean, release their music in Korea, and conduct their live activities (mostly) in Korea.
Here’s their recent sunny single “열대, 우리”, which can be translated as “Tropics, Us”.
You can follow Used Cassettes on Soundcloud and Facebook.