What key is "I Knew You Were Trouble" in?

"I Knew You Were Trouble" by Taylor Swift is in the key of G with a tempo of 150 BPM. Difficulty: easy.

Is "I Knew You Were Trouble" easy to play on piano?

Yes — this arrangement is rated easy, meaning it uses simple chord patterns and a manageable tempo. Most beginners can play through it in 1-3 practice sessions using our color-coded notes.

Can I play "I Knew You Were Trouble" without reading sheet music?

Yes. Our player offers a falling-notes mode (Synthesia-style) and a beginner mode with color-coded keys — both let you play along without reading traditional notation.

What chords are used in "I Knew You Were Trouble"?

This arrangement of "I Knew You Were Trouble" uses 4 chords: C, D, Em, G. Only a handful of chords — a great pick for early learners.

How long does it take to learn "I Knew You Were Trouble" on piano?

30–60 minutes for a basic playthrough using color-coded notes; 1–2 weeks of daily 15-min practice to perform smoothly hands-together.

What other songs by Taylor Swift can I play here?

Try "GETAWAY CAR", "THE LAST TIME", "ENCHANTED". All are available in our player with color-coded notes; pick the one matching your level.

Lyrics

Once up on a time a few mis takes a go, Pre (D)I was in your sights, that you got me a lone.

You (Em)found me, you found me, you (C)found me, ee, ee, ee, ee.

And I (G)guess you did n’t care and I guess I liked the that.

And (D)when I fell your hard, you took a step er back with (Em)out I me, with out I me, with (C)out I me, ee, ee, ee, ee.

And he’s long

(D)gone when he’s next

to (Em)me.

And I re

a lize the blame is on me.

’Cause (Em)I knew you were (C)trou ble when you walked in,

so (G)shame on (D)me now.

Flew me to (C)plac es I’ve nev er been

till you (G)put me (D)down.

Oh, (Em)I knew you were (C)trou ble when you walked in,

so (G)shame on (D)me now.

Flew me to (C)plac es I’ve nev er been.

Now I’m (G)ly (CN.C.)ing on the cold, hard (Em)ground.

Oh,

oh,

trou ble, (G)trou ble, (D)trou ble.

Oh,

oh,

trou ble, (G)trou ble, (D)trou ble.

No a pol o gies, he’ll nev er see you cry.

Pre (D)tends he does n’t know that he’s the rea son why you’re (Em)drown ing, you’re drown ing, you’re (C)drown ing, ing, ing, ing, ing.

And I (G)heard you moved n’t on from I whis pers on the street.

A (D)new notch in your belt is all I’ll ev er be.

And (Em)now I see, with now I see, with (C)now I see, ee, ee, ee, ee.

He was long

(D)gone when he met

to (Em)me.

And I re a lize the joke is on me.

’Cause (Em)I knew you were (C)trou ble when you walked in,

so (G)shame on (D)me now.

Flew me to (C)plac es I’ve nev er been

till you (G)put me (D)down.

Oh, (Em)I knew you were (C)trou ble when you walked in,

so (G)shame on (D)me now.

Flew me to (C)plac es I’ve nev er been.

Now I’m (G)ly (CN.C.)ing on the cold, hard (Em)ground.

Oh,

oh,

trou ble, (G)trou ble, (D)trou ble.

Oh,

oh,

trou ble, (G)trou ble, (D)trou ble.

(G)trou ble, (D)trou ble.

And the (C)sad dest fear

comes (Em)creep in’ in

that you (C)nev er loved me or her, or (D)an y one, or an y thing.

Yeah,

(G)trou ble, (D)trou ble.

(Em)I knew you were (C)trou ble when you walked in.

Trou ble, (G)trou ble, (D)trou ble.

(Em)I knew you were (C)trou ble when you walked in.

Trou ble, (G)trou ble, (CN.C.)trou ble.

I Knew You Were Trouble by Taylor Swift

17 people have learned this song

Easy piano arrangement in the key of G at 150 BPM. Difficulty: easy. Color-coded notes — no sheet-reading skill required.

About “I Knew You Were Trouble”

What key is "I Knew You Were Trouble" in?: "I Knew You Were Trouble" by Taylor Swift is in the key of G with a tempo of 150 BPM. Difficulty: easy.
Is "I Knew You Were Trouble" easy to play on piano?: Yes — this arrangement is rated easy, meaning it uses simple chord patterns and a manageable tempo. Most beginners can play through it in 1-3 practice sessions using our color-coded notes.
Can I play "I Knew You Were Trouble" without reading sheet music?: Yes. Our player offers a falling-notes mode (Synthesia-style) and a beginner mode with color-coded keys — both let you play along without reading traditional notation.
What chords are used in "I Knew You Were Trouble"?: This arrangement of "I Knew You Were Trouble" uses 4 chords: C, D, Em, G. Only a handful of chords — a great pick for early learners.
How long does it take to learn "I Knew You Were Trouble" on piano?: 30–60 minutes for a basic playthrough using color-coded notes; 1–2 weeks of daily 15-min practice to perform smoothly hands-together.
What other songs by Taylor Swift can I play here?: Try "GETAWAY CAR", "THE LAST TIME", "ENCHANTED". All are available in our player with color-coded notes; pick the one matching your level.