I Knew You Were Trouble. artwork

I Knew You Were Trouble.

Taylor Swift

KeyG♭ major
Tempo154 BPM
Duration3:39

Rhodes melody, piano & acoustic guitar.

Song map

INTROClick a line to play from there
SONG NOTES

Questions about this song

Answers from our automatic transcription. Key, tempo and chord labels may contain errors.

What key is I Knew You Were Trouble. by Taylor Swift in?

This transcription starts in G♭ major.

What tempo is I Knew You Were Trouble.?

The estimated tempo is 154 BPM, calculated from the median spacing between detected beats. This is a summary of the transcription; timing can vary during the song.

What are the main chord progressions in I Knew You Were Trouble.?

Recurring four-chord sequences in this transcription include G♭ → D♭ → E♭m → C♭ (21 occurrences); E♭m → C♭ → D♭ → G♭ (19 occurrences); C♭ → D♭ → G♭ → D♭ (17 occurrences). These are exact chord-label matches within sections, not a complete harmonic analysis.

What are the relative chords in I Knew You Were Trouble.?

Here are a few patterns to play with: I → V → vi → IV in G♭ major; vi → IV → V → I in G♭ major; IV → V → I → V in G♭ major. Think of Roman numerals as chord names you can take into any key. Uppercase is major, lowercase is minor; in minor keys, we count from the natural-minor scale.

Does I Knew You Were Trouble. use a well-known chord progression?

Yes! In G♭ major: The four-chord pop progression (I → V → vi → IV) shows up in the verse at 0:00 and 0:15. The big singalong loop: a little lift, a little heartache, and an easy way back home. The doo-wop progression (vi → IV → V → I) shows up in the chorus at 0:40 and 0:46. That old-school slow-dance sound, with a gentle detour through minor before heading home.

What time signature is I Knew You Were Trouble. in?

The song starts in 4/4, with a short partial bar at the beginning.

How is I Knew You Were Trouble. structured?

The detected sections are intro (0:00) → verse (0:00) → pre-chorus (0:28) → chorus (0:40) → verse (1:18) → pre-chorus (1:43) → chorus (1:55) → bridge (2:32) → chorus (2:46).

How long is this version of I Knew You Were Trouble.?

The transcribed version lasts 3:39. Other recordings or edits may have a different duration.

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