title: Growing Up (IU album)
text: # Growing Up (IU album)
  
  Growing Up is the debut studio album by South Korean singer-songwriter IU. It was released on April 23, 2009, as a follow-up to her 2008 debut mini-album Lost and Found. Two of the album's 16 tracks, "Boo" and "You Know (있잖아) (Rock Ver.)", were released as singles.
  
  ## Background
  
  Growing Up consists of 16 tracks. The album's title track "Boo" is composed by Han Sang-Won, who is best known for his melodies in songs "On days when I miss you" by Park Ji-Hun of V.O.S., and "Don't go, don't go, don't go" by Wanted. "Boo" is about a "charming friend of the opposite gender"; the lyrics tell the story of a haughty girl who does not care for the men around her. She falls in love with a boy to whom she had never given much thought. The follow-up song from the album, "You Know (Rock Ver.)", is the rock version of IU's song "You Know", which was more popular than the original version. The song portrays a young girl as she candidly expresses her feelings to the person with whom she is infatuated.
  
  ## Music videos
  
  On May 16, 2011, the music videos for "Boo" and "You Know (있잖아) (Rock ver.)" were released through Loen Entertainment's official YouTube channel.
  
  ## Promotion
  
  On April 23, 2009, IU began her first week of promotions through KBS's Music Bank. IU chose "Hey (있잖아) (Rock version)" as her follow-up single and performed it on various music programs after promotions for "Boo" had finished.
  
  ## Charts
  
  Chart performance for Up :
  
  | Chart (2012) | Peak position |
  | - | - |
  | South Korean Albums (Gaon) | 6 |
  