I Did It may refer to:
I Did It is a 1909 American silent short drama film directed by D. W. Griffith.
Spica (Hangul: 스피카, stylized as SPICA) is a South Korean girl group formed in 2012 under B2M Entertainment. The group released "Doggedly" (독하게) as a prologue single on January 31, 2012 and officially debuted on February 9 with the mini album Russian Roulette. The group consists of Kim Boa, Park Sihyun, Park Narae, Yang Jiwon and Kim Bohyung.
In the beginning of 2012, B2M Entertainment announced that they would debut a girl group. Their name is a reference to Spica, the brightest star in the constellation of Virgo. On January 10, 2012, the group released their first digital single, "Doggedly" (독하게; also translated "Potently"). The music video sparked high interest, as their fellow label-mate Lee Hyori made an appearance.
On January 31, B2M Entertainment announced that the group would have their formal debut with a mini-album, titled Russian Roulette. The full-length music video was released on February 7. Promotions for "Russian Roulette" began two days later on M! Countdown. The lyrics of the song were later modified in order to meet MBC's broadcasting standards. The group released a repackaged extended play entitled Painkiller on March 29, promoting the title track of the same name.