The Imperial March was composed by John Williams for Star Wars: The Empire Strikes Back in 1980 as the theme for Darth Vader, while Rick Astley's Never Gonna Give You Up was released in 1987 and later became the centre of the rickroll prank, which spread online in the late 2000s as a bait-and-switch link joke. Combining the two creates an instantly recognisable mashup that plays on both fandoms, and versions of it now circulate widely on soundboards, TikTok and YouTube Shorts because the opening bars alone tell listeners exactly what joke is coming.