Composed by Jonathan Wolff for Seinfeld, which premiered in 1989, the bass lines were performed on a keyboard sampler rather than a real bass guitar, giving them that exaggerated slap sound. Short musical transitions became the show's signature instead of a traditional theme over opening credits. Clips spread online as a shorthand for sitcom editing, similar to how the Law and Order DUN DUN signals a dramatic reveal. The riff remains widely reused in memes and edits because audiences instantly connect it to observational comedy and New York apartment life.