This track is composed by Yann Tiersen and is very peaceful to listen to (and play!).
This is something I learned at the beginning of the year. I came across multiple tutorials on Youtube to learn this. As you hear this tune, you will find a constant rhythm in the background which is performed by the left hand. Getting the timing right on this rhythm was essential to move forward with learning the song. The right hand itself had a couple of repeating patterns. It took some practice to get it right.
Enjoy! :)