How to play this song ?

These are single notes, not chords.
Each note must be played individually.

There are different notations, like, A B C , DO RE MI , Sa Re Ga and numeric notation 1 2 3.
Choose one that fits better for you.

You can distinguish the octave by the color of the note and if it is UPPERCASE (high pitch) or lowercase (low pitch). Enjoy

Yellow Submarine

The Beatles Pop

Yellow Submarine by The Beatles is a song in the key of E major that tells the story of a submarine captain and his crew on a journey to a land where everything is yellow. It was written and sung by Paul McCartney, with John Lennon adding harmonies. Interestingly, Ringo Starr, the drummer, was the lead vocalist, giving the song a unique twist. The melody is catchy and easy to sing along to, making it a favorite among fans of The Beatles.