《It's on Again》是一首由美國唱片藝人艾莉西亞·凱斯與美國說唱藝人肯德里克·拉瑪爾合唱的歌曲。該歌曲為2014年電影《蜘蛛人：驚奇再起2》所寫，寫作者是凱斯和拉瑪爾，電影配樂是漢斯·齊默，製作人是法瑞爾·威廉斯[1]。《It's on Again》是以《驚奇蜘蛛俠2》原聲帶首支單曲的形式於2014年3月31日發行的。
2014年3月12日，哥倫比亞唱片發布了新聞稱：《It's on Again》將會被包括在《驚奇蜘蛛俠2》原聲帶中，且作為電影的片尾曲[2]。The release included a statement from director Marc Webb, who described the process of selecting "a song that would be upbeat and exciting, but also contain a note of foreboding" to serve as the film's the closing theme and praised "It's on Again" as the "perfect end note."[2] Keys also expressed her excitement at working with Kendrick Lamar, producer Pharrell Williams and film composer Hans Zimmer, the latter of whom scores the film.[2] On March 31, "It's on Again" was uploaded to Keys' official Soundcloud page[3] and impacted mainstream urban radio in the United States.[4] The following day, it was released digitally as a single.[5]
