This song uses only the white keys on the piano. The left hand starts on C, then goes up to the next C one note at a time, and then goes back down.
There are only three rhythms in this song: quarter notes (1 beat), half notes (2 beats), and whole notes (4 beats).
If you need to, play through each hand separately before you put them together.
(Use the “Full screen” button on the video player to make it bigger)