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 and Sa Re Ga.
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

I Knew You Were Trouble

Taylor Swift Pop

"I Knew You Were Trouble" is a song in the key of F# minor. It was released by Taylor Swift as a single from her fourth studio album, "Red," in 2012. The song was written by Taylor Swift, Max Martin, and Shellback. As an interesting trivia, the inspiration behind the track came from Swift's personal experiences and past relationships. "I Knew You Were Trouble" features a catchy and dynamic melody, characterized by a blend of pop and country elements that is distinctively Taylor Swift.