Cube Entertainment's new 7-member male idol group, BTOB, has finally made their official debut. The group's debut tracks titled "Insane" and "Imagine" has been released on various online music websites.

On March 22nd, BTOB unveiled the full music video for the track "Insane". The music video features A Pink's Park Chorong and highlighted the BTOB 's emotional voices as well maximize the song’s dramatic effects.

The song was produced by Seo Jae Wook, the same composer responsible for 4minute and B2ST’s songs. The harmony of the colorful and emotional melody with the vocals and rap of the BTOB members has especially left a memorable impression with its listeners.