MusicRetuner.com—which lets anyone instantly retune their favorite songs from 440 Hz to 432 Hz while streaming music on YouTube or Apple Music—has reignited the 432 Hz debate online, with everyone from music enthusiasts, sound engineers, and orchestra musicians weighing in. While many theories for the significance of 432 Hz exist, the main one claims that 432 Hz corresponds to mathematical patterns found in the universe—like the golden ratio, planetary orbits, and ancient architecture. Sound Waves | Francesco Carta fotografo/GettyImagesSearch “432 Hz vs 440 Hz” on YouTube and you’ll find countless side-by-side comparisons. 440 Hz vs. 432 Hz: What’s The Difference? 440 Hz 432 Hz A4 note (anchor key) would equal 440 Hz 432 Hz Sound Louder Flatter Common use Universal standard a.k.a.