Mr. Simple

Mr. Simple (reissue name A-Cha) is the fifth studio album by the South Korean boy band Super Junior. It was released on 3 August 2011 by SM Entertainment, distributed by KMP Holdings and digitally release on 2 August. On 19 September 2011, a repackaged edition was released, re-titled A-Cha. It features four new tracks including title track "A-Cha" and "Superman" which was previously released in version B only. This is the group's second album that features ten of the original 13 members and the first being their previous album, Bonamana (2010).

Mr. Simple

Mr. Simple (reissue name A-Cha) is the fifth studio album by the South Korean boy band Super Junior. It was released on 3 August 2011 by SM Entertainment, distributed by KMP Holdings and digitally release on 2 August. On 19 September 2011, a repackaged edition was released, re-titled A-Cha. It features four new tracks including title track "A-Cha" and "Superman" which was previously released in version B only. This is the group's second album that features ten of the original 13 members and the first being their previous album, Bonamana (2010).