R2-D2 was created for Star Wars in 1977, with sound designer Ben Burtt building the droid's voice from synthesizer tones and his own vocal sounds. Without spoken dialogue, those beeps became a full language that audiences learned to read from context and from other characters' replies. The sound has since spread far beyond the films into games, parodies, toys and online edits, often paired with dramatic moments like the Darth Vader NOOOOOOOOO scream for contrast. Its lasting appeal is that a few electronic notes can suggest loyalty, panic, humour or triumph.