This is an arrangement of 'Silent Night' for grade 2-3 piano. Notice how the left hand uses the opening melodic over and over again. Try using the sustain pedal in this piece.

"Silent Night" is a popular Christmas carol, composed in 1818 by Franz Xaver Gruber to lyrics by Joseph Mohr in the small town of Oberndorf bei Salzburg, Austria. It was declared an intangible cultural heritage by UNESCO in 2011. The song has been recorded by many singers across many music genres. The version sung by Bing Crosby in 1935 has sold 10 million copies as a single.
The above text from the Wikipedia article "Silent Night" text is available under CC BY-SA 3.0.