Super Simple Chords

Piano chords · Pop heartbeat

I Knew You Were Trouble: easy piano accompaniment in letter notes

By Taylor Swift

  • G major
  • 4/4
  • 150 BPM
  • 2012
  • Medium
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Left hand Eager heartbeatRight hand Pony-trot chordsChords worked out from the notes of the famous part

Play the full song with sheet music

The accompaniment with every note named, bar by bar: the bar sheet shows each note as a bar on the staff with its letter inside, so you can accompany I Knew You Were Trouble without reading music. The left hand plays eager heartbeat (root bass · pop push 1 · 2 · 2& · 3& · 4) and the right hand pony-trot chords.

The main tune of I Knew You Were Trouble in letter notes

The real notes from a score, both hands, bar by bar. R is the right hand, L the left; C4 is middle C.

Bar 1
Em
RE4 E4+G4+B4 E4 E4+G4+B4
LE2 E3 E2
Bar 2
C
RD4 E4 G3+C4+E4 D4 G3+C4+E4 G4 A3+D4+F#4
LC2 C2 C3
Bar 3
D
RA3+D4+A4 G4
LD2 D3 D3
Bar 4
G → D
RA4+D5+A5 G4+D5+G5 A3+D4+A4 G3+D4+G4
LG2 G2 D3 D2

I Knew You Were Trouble accompaniment in letter notes

The Em – C – D – G – D loop with eager heartbeat in the left hand and pony-trot chords in the right. Notes struck together are joined with a plus; C4 is middle C.

Bar 1
Em
RG4+B4+E5 G4+B4+E5 G4+B4+E5 G4+B4+E5 G4+B4+E5 G4+B4+E5
LE2 E3 E2 E2 E3
Bar 2
C
RE4+G4+C5 E4+G4+C5 E4+G4+C5 E4+G4+C5 E4+G4+C5 E4+G4+C5
LC3 C4 C3 C3 C4
Bar 3
D
RF#4+A4+D5 F#4+A4+D5 F#4+A4+D5 F#4+A4+D5 F#4+A4+D5 F#4+A4+D5
LD2 D3 D2 D2 D3
Bar 4
G → D
RB4+D5+G5 B4+D5+G5 B4+D5+G5 B4+D5+G5 D4 E4 F#4 G4 A4 B4 C5 D5
LG2 G3 G2 D2 D3
Bar 5
Em
RG4+B4+E5 G4+B4+E5 G4+B4+E5 G4+B4+E5 G4+B4+E5 G4+B4+E5
LE2 E3 E2 E2 E3
Bar 6
C
RE4+G4+C5 E4+G4+C5 E4+G4+C5 E4+G4+C5 E4+G4+C5 E4+G4+C5
LC3 C4 C3 C3 C4
Bar 7
D
RF#4+A4+D5 F#4+A4+D5 F#4+A4+D5 F#4+A4+D5 F#4+A4+D5 F#4+A4+D5
LD2 D3 D2 D2 D3
Bar 8
G → D
RB4+D5+G5 B4+D5+G5 B4+D5+G5 B4+D5+G5 F#4+A4+D5 F#4+A4+D5
LG2 G3 G2 D2 D3

How to read the bar sheet

The player above shows the treble staff (right hand) over the bass staff (left hand). Every note is a bar as long as it sounds, at its place on the staff, with its name inside, and the music scrolls past a line that marks now. The chord names run along the top.

Start with the left hand alone at a slow speed, then the right, then both. When the letters feel easy, try the sheet music.

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Questions about I Knew You Were Trouble

What are the letter notes for the I Knew You Were Trouble piano accompaniment?

Bar by bar, both hands: the bar sheet on this page names every note of the accompaniment (C4 is middle C) and plays along. The loop is Em – C – D – G – D, so the letters repeat with the chords.

What chords are in I Knew You Were Trouble?

The loop is Em – C – D – G – D (vi – IV – V – I – V) in G major, and the song ends on C – D – G.

What key is I Knew You Were Trouble in?

G major, at about 150 beats a minute in 4/4.

What does the left hand play in I Knew You Were Trouble?

Eager heartbeat: root bass · pop push 1 · 2 · 2& · 3& · 4, an easy pattern. It follows the chords, so the same shape works for every bar.

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

It is a medium one: learn the 5 chords as blocks first, then add the left hand, then the right, slowly.

Can I hear the real melody of I Knew You Were Trouble?

Yes: "The part you know" plays the main tune of the song from a score, with both hands.

Made from 2 arrangements of this song: the left and right hands are the patterns these scores repeat most.