The Power of Amazing Music! Apparently Can Completely Change Someone's Behavior! Listen Some Stories About This Impressive Music. Doing things easily without having to work hard. One of them when in a mall.

Some prefer to jostle in the elevator, rather than walking up the stairs.

In Stockholm, Sweden, there are designers who use the night time, install pressure sensors on all the stairs at the subway station, he turns the ladder into a piano with black and white keys.

Each step of the ladder depicts the various piano buttons and tones, which will produce a melodious melody, as if playing a giant piano.

Slowly, those who love the piano ladder are getting more and more, and some are especially on this piano ladder and perpetuate their pictures as memories as they go up and down the piano ladder to create different melodies.