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

From This Moment On

Shania Twain Pop

"From This Moment On" is a popular song by Canadian singer-songwriter Shania Twain, originally released in 1998. The song is written in the key of G major and has become one of Twain's signature songs. It was co-written by Twain herself along with Robert John "Mutt" Lange, her then-husband at the time. Fun fact, the song was inspired by a conversation between Twain and Lange while on a beach in Italy. "From This Moment On" is a beautiful ballad with a romantic melody that showcases Twain's powerful and emotive vocals.