Netflix introduced its 'ta-dum' sonic logo in 2015 to play before its original films and series, and it quickly became one of the most recognisable sounds in streaming. Crafted by veteran Hollywood sound designer Lon Bender, the two-note hit was built from layered recordings to feel cinematic in just a few seconds. It soon escaped its branding role as creators sampled it for memes, parody trailers and dramatic reveal edits. Years later it still signals instant prestige, turning any clip it opens into a mock blockbuster moment.