Seinfeld, the American sitcom created by Larry David and Jerry Seinfeld, ran on NBC from 1989 to 1998, and its slap bass theme became one of television's most recognisable scene markers. Composer Jonathan Wolff built the theme around a funky bass line, and short variations were used throughout episodes to move between Jerry's apartment, the diner and other locations. Clips of those transitions later spread through video edits, reaction videos and meme compilations, where the riff now works on its own as instant shorthand for sitcom timing and 1990s television.