Seinfeld premiered on NBC in 1989 and ran until 1998, with composer Jonathan Wolff creating its distinctive music using sampled slap bass sounds rather than a live bassist. The short riffs were written as transitions between stand up segments and apartment scenes, giving the show a signature that separated it from traditional sitcom scoring. Like the Law and Order DUN DUN, clips circulated online in the 2000s and 2010s as reaction and editing sounds, and creators kept using the riff because a single burst instantly frames any cut as a sitcom joke.