The upward harp glissando is a long-standing musical gesture rather than a clip tied to one film, show or meme. Harpists create it by sweeping a hand across the strings, producing a rapid cascade that composers have used for decades to suggest magic, dreams, clouds and sudden inspiration in orchestral scores and animated cartoons. Short isolated versions circulate widely as stock sound effects, which is why editors recognise it instantly even without a specific source. Its familiarity and clean, upward motion keep it useful for transitions, reveals and lighthearted fantasy moments.