Billie Jean was released by Michael Jackson in 1983 as a single from his Thriller album, and it became one of the defining pop songs of the decade, helped by its groundbreaking music video and Jackson's signature dance performances. The song's opening bassline has since become instantly recognisable in its own right, sampled and referenced across pop culture for decades. On soundboards and in short-form video, the short instrumental opening is now reused as shorthand for confidence, cool entrances and 1980s nostalgia.