If you thought marbles could be used just for playing games, be prepared to be amazed.
In an amazing video on YouTube, a man called Martin Molin has demonstrated the used of his Marble Machine.
What does this Marble Machine do though? It creates beautiful music using nothing but marbles.
That's right. Using nothing but marbles and an intricate combination of gears, levers and musical instruments placed at the correct spots, the Marble Machine makes mesmerising music.
The music, which begins with just one sound which reminds one of a xylophone, quickly picks up sounds from a lot of other instruments, including bass and guitar to show people how elaborate the music from the Marble Machine actually is.
If you ever wanted to see the wonderful brilliance which innovation can achieve, this video is a must-watch.
You can watch the entire video here: