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

Mercy, Mercy

Hillsong United Gospel

The original key for the song "Mercy, Mercy" by Hillsong United is D. The song was first released on the album "Zion" in 2013. It is an uplifting worship song that reflects on God's mercy and grace. The track was written and composed by Joel Houston, Matt Crocker, and Ben Tennikoff. One interesting fact about the song is that it features a mix of electronic and rock elements in its musical arrangement. The melody is characterized by catchy guitar riffs and strong vocals, creating a powerful and engaging sound.