Standing Egg is a South Korean indie acoustic pop band that made their debut in 2010 via Von Entertainment (Hangul: ; styled as Standing EGG or STANDING EGG).
Three people make up the band: Egg 1, Egg 2, and Egg 3. They also produce and write the music. Since they lack a singer or musicians, they use a variety of guest indie musicians for their songs and performances, like Clover (guitar, vocals), Windy (vocals), Han Gyul (double bass), or Hana (djembe).
Full Bio On Wikipedia.