"3,4, Born to Beat! Hello, We are BTOB" BTOB (Korean: 비투비, acronym for Born to Beat) is a seven member boy group under Cube Entertainment.
Prior to their debut, Seo Eunkwang, Lee Minhyuk, Lim Hyunsik, Jung Ilhoon and Lee Minwoo were part on the original list of members who are waiting to be debuted under the name of "BtoB". They also made their appearance on the JTBC sitcom "I Live in Cheongdam-dong" as an aspiring boy band towards their debut. However, Lee Minwoo dropped out of the list of confirmed members due to his health.
On March 21, 2012, the group made their official debut with their first digital single 비밀 (Insane) and made their debut stage on March 22nd, 2012 with their title tracks "Insane" and "Imagine" on Mnet’s M! Countdown.