Lo-fi is a music or production quality in which elements usually regarded as imperfections in the context of a recording or performance are present, sometimes as a deliberate choice. The standards of sound quality (fidelity) and music production have evolved over the decades, meaning that some older examples of lo-fi may not have been originally recognized as such. Lo-fi began to be recognized as a style of popular music in the 1990s, when it became alternately referred to as DIY music. Some subsets of lo-fi music have become popular for their perceived nostalgic and/or relaxing qualities, which originate from the imperfections that define the genre.

Smiley Smile is the 12th studio album by the American rock band the Beach Boys, released on September 18, 1967. Conceived as a simpler and more relaxed version of their unfinished Smile album, Smiley Smile is distinguished for its homespun arrangements, "stoned" aesthetic, and lo-fi production. Critics and fans generally received the album and its lead single, "Heroes and Villains", with confusion and disappointment. The album reached number 9 on UK record charts, but sold poorly in the U.S., peaking at number 41—the band's lowest chart placement to that point.