# Train of Thought – a-ha: piano chords

Train of Thought by a-ha uses 10 chords in E major; difficulty on the piano: medium.

## Chords in the song

[E](https://pianokitty.com/c/Emaj), [D](https://pianokitty.com/c/Dmaj), [A](https://pianokitty.com/c/Amaj), [D/E](https://pianokitty.com/c/Dmaj), [C#m](https://pianokitty.com/c/Csharpm), [Bm7](https://pianokitty.com/c/Bm7), [C#m7](https://pianokitty.com/c/Csharpm7), [F#m](https://pianokitty.com/c/Fsharpm), [Bm](https://pianokitty.com/c/Bm), [C#](https://pianokitty.com/c/Csharpmaj)

## Chord sheet

- Chords in the song: E D A D/E E D A D/E E D A E D C#m D Bm7 C#m7 D E Bm7 C#m7 D E Bm7 C#m7 D E Bm7 C#m7 D E F#m D A Bm E C#m E D/E C# Bm E C#m E D/E C#m E Bm E C#m E D/E Bm E C#m E D/E C#m E

## Questions

### Which chords does Train of Thought by a-ha use?

Different chords: 10. They are all in the list under “Chords in the song”.

### What key is Train of Thought by a-ha in?

The chords fit E major. This is estimated from the chords, so the recording may be in another key.

### How hard is Train of Thought to play on the piano?

Difficulty: medium. The rating counts the different chords (10), 7th and extended chords, and chords with another bass note.

[Practice this song](https://pianokitty.com/app?subject=songs&spec=E+D+A+D%2FE+E+D+A+D%2FE+E+D+A+E+D+C%23m+D+Bm7+C%23m7+D+E+Bm7+C%23m7+D+E+Bm7+C%23m7+D+E+Bm7+C%23m7+D+E+F%23m+D+A+Bm+E+C%23m+E+D%2FE+C%23+Bm+E+C%23m+E+D%2FE+C%23m+E+Bm+E+C%23m+E+D%2FE+Bm+E+C%23m+E+D%2FE+C%23m+E&seq=inOrder&title=a-ha+-+Train+of+Thought)

[Piano chords for popular songs](https://pianokitty.com/songs/browse)

Chord data: [Chordonomicon](https://huggingface.co/datasets/ailsntua/Chordonomicon), [CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/). Chords are transcriptions and can differ from the recording.

https://pianokitty.com/songs/a-ha/train-of-thought