Online virtual accordion
Play 25 keys from C4 to C6 and 72 Stradella bass buttons. Combine melody and accompaniment with several fingers.
Example Stradella column in C
The column combines counter bass, bass and chords. Seventh and diminished omit the fifth in this model.
| Row | Notes |
|---|---|
| Counter bass | E |
| Fundamental bass | C |
| Major | C · E · G |
| Minor | C · E♭ · G |
| Seventh | C · E · B♭ |
| Diminished | C · E♭ · A |
How to use it
- Set the volume and play the keys or their shortcuts.
- Scroll the grid to choose a bass or chord.
- Select a practice area and target.
- Record and replay; Practise bass and chord guides the left hand.
Help and explanations
The reed-like sound sustains while you hold a key. The virtual instrument helps you learn notes; bellows control requires physical practice.
Stradella layout
Columns follow fifths; F and G sit beside C. Rows are counter bass, fundamental bass, major, minor, seventh and diminished. Counter bass is the root’s major third. Source: HOHNER.
Chords and practice
Major and minor triads contain three notes. Seventh and diminished chords omit the fifth in this model; physical voicings and registers vary. The exercise alternates root, major chord, fifth and major chord. Local sessions end at 3 minutes or 1,200 events.
For the left hand, first find the C bass and its major chord. Practise bass and chord presents the root bass, major chord, fifth bass and major chord in order. Find each button before increasing your speed. Then choose another bass or chord target and explore neighbouring fifths. Record a short passage and replay it to hear how long you held each button. Practise the melody separately, and combine the parts once you know where their notes are. The exercise checks button choices; it does not measure hand coordination or bellows movement.
Tips
- Find C in the fundamental bass row.
- Practise melody and bass separately.
- Release the key for short articulation.
Frequently asked questions
Is this a diatonic accordion?
No. It models a piano keyboard and Stradella bass; notes do not change with bellows direction.
Which notes does a chord button play?
Major and minor play triads; seventh and diminished use three voices without the fifth.
Can I play melody and bass together?
Yes. Use several fingers or combine computer keys with the mouse on bass buttons.
Is the recording sent to a server?
No. Notes and timing stay in the page’s memory and disappear on reload.