There are 4 artists with the name TERRA: 1. TЁЯRA is a pair consisting of vocalist Jun and guitarist/producer NAOKI Maeda, though these roles are not set in stone. In addition, jun writes lyrics and does the majority of the composition while Naoki arranges and produces the tracks. Their musical genre have been defined as HYPER J-POP though this term is flexible to include variants of pop, rock and trance in addition to dance. They produce trance tracks for the bemani series of games (beatmania IIDX, Dance Dance Revolution, GuitarFreaks and Drummania, Pop'n Music.