"Let It Happen" is a song by the Australian rock artist Tame Impala. It was released as the lead single from their third studio album, Currents (2015), on 10 March 2015. The song centers on accepting personal transition, and was worked on in various locations around the world. The song runs at nearly eight minutes long, and its second half contains a section of the song repeating akin to a scratched Compact Disc, and stripped-down lyrics consisting of gibberish. It also has vocoded-like vocals in the second half, which were actually manipulated with a keyboard sampler.

Tame Impala is the psychedelic music project of Australian multi-instrumentalist Kevin Parker. In the recording studio, Parker writes, records, performs, and produces all of the project's music. As a touring act, Tame Impala consists of Parker, Dominic Simper, Jay Watson, Cam Avery, and Julien Barbagallo. The group has a close affiliation with fellow Australian psychedelic rock band Pond, sharing members and collaborators, including Nick Allbrook, formerly a live member of Tame Impala. Originally signed to Modular Recordings, Tame Impala is now signed to Interscope Records in the United States and Fiction Records in the United Kingdom.