B1A4 < 없구나 Lonely >

B1A4 is a boy group from South Korea. Their first debuted album O.K released in 2011. This group joined five boy members whose had one blood type of B and four members with blood type of A. The members are Jung Jin Young (born on 18th November 1991, now he's 23 years old), Gong Chan Shik or better known as Gongchan (born on 14th August 1993, now he's 21 years old), Cha Sun Woo or bettern known as Baro (born on 5th September 1992, now he's 22), Lee Jung Hwan or better known as Sandeul (born on 20th March 1992, now he's 22) and lastly Shin Dong Wu or better known as CNU  (born in 16th June 1991, now he's 23)

F.T. Island < 미치도록 > Madly

F.T. Island 에프티 아일랜드 is a South Korean five members rock band includes Choi Jong Hoon, 최종훈 (born on 7th March 1990, now he's 24 years old) is the leader, guitarist and keyboard position member.

Lee Hong Ki 이홍기 as main vocals (born on 2nd March 1990 (now he's 24),

Lee Jae Jin 이재진 born on 17th December 1991 (now he's 23) as secondary vocals and bass position member.

Song Seung Hyun 송승현 as guitarist and secondary vocals whose born on 21st August 1992 (now he's 22 years old). 

Choi Min Hwan 최민환 is the last member of F.T. Island who in charged of drum position that was born on 11th November 1992 (and he's now 22).

Their first debuted album Cheerful Sensibility released in 2007 and recently Japanese Singles Mitaiken Future in 2014.

BoA 보아 그런 너 < Disturbance >

Kwon BoA, 權宝儿 is a South Korea singer and actress born on 5th November 1986 (now she's 28) is popular with her name BoA which highly stands for Beat Of Angel. She released her first debut album, "ID; Peace B" in 2000 that allows her to received Best New Female Solo, "No.1" in 2002, she won the Best Popular Music Video and until recent in 2012 her latest album name "Only One". She also won award in her acting career too.