Humming Urban Stereo(허밍 어반 스테레오) is an electronic trio based in South Korea. Their music, similar to that of the shibuya-kei movement, is a fusion of bossa nova, acid jazz, lounge, and house. It was created by Lee Jeereen (이지린), who is the leader, vocalist, and keyboard player. He is assisted by two female vocalists, Shina-E and Humming-Girl. Their popular first EP 'Short Cake' helped them to release their first album, 'Very Very Nice! and Short Cake' (A double CD Package) in January 2005. Because of their popularity they were able to release a second album, 'Purple Drop', on March 13, 2006.