Sweet Caroline was written and recorded by Neil Diamond and released as a single in 1969, reaching the top five in the US. Decades later it became a stadium ritual, most famously at Fenway Park where Boston Red Sox fans have sung it during the eighth inning since the late 1990s. The call-and-response chants were added by crowds over time and helped turn the song into a universal singalong. It is now used far beyond baseball at weddings, pubs and parties wherever a familiar chorus can unite a room.