The gospel organ sound comes from the Hammond organ tradition that shaped American gospel and soul music from the mid twentieth century onward. In Black churches, organists used swelling chords and the Leslie speaker to lift choirs and build emotional peaks during services. That style spread into soul, R and B and popular music, and later became a recognisable audio shorthand online. A short organ swell now signals praise, revelation or mock holiness in edits, even in clips far removed from an actual church setting.