"Going Crazy" (Korean: Michin Geoni (미친거니)) is a song recorded by South Korean idol singer Song Jieun. It is released as a Digital single on March 3, 2011 through TS Entertainment. The song's inspiration came from the producers who have felt they needed to showcase a darker side of Jieun thus coming up with the idea of a stalking relationship. The song features B.A.P's Bang Yong Guk, who sings the rap parts of the song. The song's lyrics tells of a fallen relationship in which the protagonist couldn't stand the stalking of her obsessed ex-lover.

The song was composed and produced by Kang Jiwon and Kim Kibum, the same composers of Secret's hits such as "Magic", "Madonna"and "Shy Boy". "Going Crazy" is a midtempo hip hop ballad with guitar, piano and violin instrumentation. Featured singer, Bang Yong Guk participated in the song's production by writing the lyrics of his rap parts in "Going Crazy".

The single was promoted with live performances and a music video. Jieun and Yong Guk promoted the song on M! Countdown, Music Bank, SBS MTV's The Show, Music Core and Inkigayo. In December 2011, a remix version of "Going Crazy" was performed on MBC's 2011 Gayo Daejaejun!. They also performed the song on B.A.P's debut showcase in January 2011. The accompanying video, directed by Johnny Bro's Hon Won Ki and filmed in February 2011, stars Min Hyorin and B.A.P's Kim Himchan in a kidnapping scene as Jieun and Yong Guk perform in an abandoned building and in a rice field.

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