Tree Bicycle consists of In-bong Kang and Hyung-seop Kim and sings refreshing songs with the acoustic guitars. Their songs and touching voices highlight the sound of guitars and quietly describe love and sadness. They are exploring many other genres by arranging famous songs from other genres like trot, dance, and rap music in folk songs. They also actively participate in various works like concerts and O.S.T. composition for TV dramas and films.