A Romanian concert pianist has unofficially broken a Guinness World Record for the most notes hit on the piano in 30 seconds, hitting the highest note on a piano a staggering 500 times.

Player pianos work via a vacuum, where air is sucked through a few pin points in a piano roll with a bellows. A series of pipes leading to each key translate these small holes into notes.

Whether a given note is deemed sharp or flat largely depends on the current scale or key. On the piano keyboard, two notes ...