Teen Builds World’s Longest Piano with Deepest Sound Ever Heard
At just 15 years old, Adrian Alexander Mann set out to answer a question his piano teacher couldn’t:
how long would a bass string need to be without copper wrapping to produce a rich, deep tone?
His backyard experiments led to a five-year journey of craftsmanship and ingenuity, resulting in The Alexander Piano—a stunning 18-foot-9-inch instrument weighing over a metric ton and producing an unmatched, resonant sound.
Built entirely by Mann himself, this piano holds the longest bass string ever installed in a functioning instrument.
It’s not just an engineering marvel—it’s a testament to youthful passion and the limitless potential of human curiosity.
Hear what the world’s longest piano sounds like today.
