A♯ Iwato at a glance
Iwato is a meditative Japanese scale used in shakuhachi music. Sounds sparse, calm and exotic to Western ears. Built on the root A♯, the scale takes on the specific colour and pitch range of that key - making it especially useful in genres and registers where A♯ is a comfortable tonal centre.
| Notes | A♯ B D♯ E G♯ |
|---|---|
| Formula | 1P · 2m · 4P · 5d · 7m |
| Step pattern | H 2W H 2W W |
A♯ Iwato on the piano
Improvisation drone · A♯
Loop the root note as a pad to practice improvising over this scale.
On the piano A♯ Iwato uses three black keys (A♯, D♯ and G♯) and two white.
A♯ · B · D♯ · E · G♯
Try A♯ Iwato on the virtual piano
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A♯ Iwato on the guitar
A♯ Iwato - fr 0–12
A♯ Iwato on the staff
Notes of the A♯ Iwato scale
| Degree | Note | Interval | Semitones | Hear |
|---|---|---|---|---|
| 1 | A♯ | unison1P | 0 | |
| 2 | B | minor 2nd2m | 1 | |
| 3 | D♯ | perfect 4th4P | 5 | |
| 4 | E | diminished 5th5d | 6 | |
| 5 | G♯ | minor 7th7m | 10 |
What makes A♯ Iwato different
Iwato uses five notes (1, ♭2, 4, ♭5, ♭7) and has neither a third nor a perfect fifth. Its two half steps, 1 to ♭2 and 4 to ♭5, sit next to two gaps of a major third, ♭2 to 4 and ♭5 to ♭7, which makes it sound sparse and unresolved. Every note belongs to Locrian on the same root; Iwato just leaves out the ♭3 and ♭6. With no fifth, the tonic never settles, which suits slow, meditative music. On A♯, A♯ Iwato is A♯ Locrian (A♯ B C♯ D♯ E F♯ G♯) without C♯ and F♯.
How to use the A♯ Iwato scale
Because A♯ Iwato has fewer or more than seven notes, it doesn't produce a standard set of seven diatonic triads. Instead, build chords by stacking thirds within the scale or use it as a melodic colour over chords drawn from a related diatonic key.
Iwato is a meditative Japanese scale used in shakuhachi music. Sounds sparse, calm and exotic to Western ears.
Practice tips
Iwato is meditative - practise breathing slowly between phrases as if you were playing the shakuhachi.
Formula & step pattern
The A♯ Iwato scale follows a five-note scale with intervals 1, ♭2, 4, ♭5, ♭7 used in shakuhachi music. Step pattern: H - 2W - H - 2W - W. Intervals from the root: 1P · 2m · 4P · 5d · 7m. Memorising the formula lets you transpose the scale to any other root note quickly.
Where you will hear A♯ Iwato
Start with the music described above: listen for A♯ Iwato in it and transcribe a few short phrases by ear. It's the quickest way to learn how the scale sounds.
Questions people ask
What notes are in the A♯ Iwato scale?
The A♯ Iwato scale contains A♯, B, D♯, E and G♯.
What is the formula for the A♯ Iwato scale?
A♯ Iwato follows a five-note scale with intervals 1, ♭2, 4, ♭5, ♭7 used in shakuhachi music.
Is A♯ Iwato a major or minor scale?
A♯ Iwato is a iwato scale. Japanese pentatonic scale built on flat seconds and fifths - sparse and meditative.
What chords belong to the A♯ Iwato scale?
A♯ Iwato doesn't produce a standard seven-chord diatonic set. Use chords from a related diatonic scale instead.
Which genres use A♯ Iwato?
Iwato is a meditative Japanese scale used in shakuhachi music. Sounds sparse, calm and exotic to Western ears.
How do you play the A♯ Iwato scale on the piano?
On the piano A♯ Iwato uses three black keys (A♯, D♯ and G♯) and two white.
What is the difference between A♯ Iwato and A♯ Locrian?
On A♯, A♯ Iwato is A♯ Locrian (A♯ B C♯ D♯ E F♯ G♯) without C♯ and F♯.
How do I practise the A♯ Iwato scale?
Iwato is meditative - practise breathing slowly between phrases as if you were playing the shakuhachi.