The journey started since Yadi (Komeng) met Iben in an art gallery of the famous university which is located at the eastern of Bandung. With a same taste of music, they agreed to make an instrumental post-rock band that inspired of famous post-rock band, such as Explosions In The Sky, This Will Destroy You, Sigur Ros, Mogwai, Mono, etc.

Under The Big Bright Yellow Sun's music is a reflection of their daily life. Happy, sad, grateful, desperate, depressed, anger, that’s all reflected from their music arrangemen.

UTBBYS don't want to be glued with the post-rock pattern that's identically with gloomy and monotones sound. UTBBYS do some experiment and sound exploration many times. Bow's applications sounds exploration with various guitar effects using ambient sound and also experimental bell become the character of UTBBYS.