Top Gear is a BBC motoring programme first broadcast in 1977 and relaunched in its best known format in 2002. Its theme is Jessica, an instrumental written by Dickey Betts and released by the Allman Brothers Band on the 1973 album Brothers and Sisters. Different arrangements of the guitar tune have opened the show for decades, becoming inseparable from its presenters, challenges and track tests. Online, the short excerpt is reused as shorthand for cars, speed and British motoring television, appearing in parodies, fan edits and travel videos long after each episode aired.