Jung Ji-hoon, better known by his stage name Rain or Bi Rain, is a South Korean singer, songwriter, dancer, actor, and record producer. Rain's musical career includes seven albums, 28 singles and numerous concert tours around the world. He achieved breakthrough success with his third Korean album, It's Raining (2004), which spawned the number one single of the same name. The album sold over 200,000 copies in South Korea and one million copies throughout Asia, and established Rain as an international star.

It's Raining is the third Korean-language studio album by South Korean recording artist Rain, released through JYP Entertainment on October 8, 2004. Two singles were promoted for the album with accompanying music videos and promotions on music programs: the title track "It's Raining" and "I Do". The album was released in several territories throughout Asia in 2005, including Japan, Hong Kong and Taiwan.