I Got a Boy is the fourth Korean full-length album by Girls' Generation. It was released online on January 1, 2013, and was made available offline the following day. "Dancing Queen" served as a pre-release while the title track was released along with the album to continue promotions.
"Dancing Queen" was recorded in 2008 and is a remake of the song "Mercy" by Welsh singer Duffy.
"Baby Maybe" was originally co-written as a demo in English by English singer-songwriter Pixie Lott under the title as "What You Do". The song was later given to Girls' Generation with Seohyun, Yuri and Sooyoung re-writing the lyrics in Korean.
A Japanese version of "Talk Talk" was included in their second Japanese studio album, Girls & Peace.
"Express 999" is a reference to the anime Galaxy Express 999.