Seinfeld aired on NBC from 1989 to 1998 and used short slap bass interludes instead of a traditional theme during episodes. Composer Jonathan Wolff created the improvised style riffs, performed to match Jerry Seinfeld's stand up transitions between scenes. The basslines became the show's sonic signature despite the series having no opening song with lyrics. Decades later the riff spread online as a meme transition, used whenever creators want an instant sitcom feeling, an ironic scene change or a knowing nod to 90s television comedy.