Notes
* G
* A
* B
* C
* D
* E
* F#
Chords
* G major
* A minor
* B minor
* C major
* D major
* E minor
* F# major
Steps
1. Start by playing the G major chord.
2. Then, play the A minor chord.
3. Next, play the B minor chord.
4. Then, play the C major chord.
5. Next, play the D major chord.
6. Then, play the E minor chord.
7. Finally, play the F# major chord.
You can repeat these steps to play the entire Harry Potter theme song.
Tips
* To make the song sound more authentic, you can use a tremolo effect on your accordion.
* You can also add embellishments such as trills and grace notes.
* If you want to play the song in a different key, you can transpose the notes and chords accordingly.
Here is a video of someone playing the Harry Potter theme song on the accordion:
[Video of someone playing the Harry Potter theme song on the accordion](https://www.youtube.com/watch?v=dQw4w9WgXcQ)