fuaranScale Mastery
SCALE · ON BASS TROMBONE

A♯ In Sen

Japanese 5-note urban shamisen scale — 1 ♭2 4 5 ♭7. Modal-jazz workhorse beyond Japan.

MEIMIDIHumdrum
Choose a root
Meter:Octave per barCrotchets in 4/4Quavers in 4/4Triplets in 4/4
Engraved by Verovio 6.2.0-43f8060 5 title A♯ In Sen
Engraved by Verovio 6.2.0-43f8060 2 4 6 title A♯ In Sen
Verovio
Tempo120 bpm

Audio source: synthesised in-browser via Tone.js (MIT)

FingeringFollows the scale as it plays — written pitch, matches the staff
A♯F triggerFG♭ triggerG♭1234567partial 2
Harmonic seriesTube of the tonic fingering — A♯ sounds partial 2
partial 1 — A♯1 (+0¢)1partial 2 — A♯2 (+0¢)2partial 3 — F3 (+2¢)3partial 4 — A♯3 (+0¢)4partial 5 — D4 (-14¢)5partial 6 — F4 (+2¢)6partial 7 — G♯4 (-31¢)7-31¢partial 8 — A♯4 (+0¢)8
Related scales
Same scale, other instruments
Same scale, other tonics
Modes built on this tonic
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Theory reference
Questions
What notes are in the A♯ In Sen scale?

The A♯ In Sen scale uses the notes A♯, B, D♯, E♯, G♯ (one octave; the pattern repeats at higher registers).

What's the In Sen scale formula?

The In Sen scale follows the interval pattern H 4 W W+H W, where W = whole step (2 semitones) and H = half step (1 semitone). Apply that pattern starting on A♯ to get the A♯ In Sen scale.

What chords work over A♯ In Sen?

Try chord pairings derived from the scale's third, fifth, and seventh degrees as roots — they share the most diatonic notes.

How do I finger A♯ In Sen on Bass Trombone?

On brass, scales train embouchure + valve / slide coordination across the partials. Slow practice with a tuner reveals intonation tendencies (e.g., the 5th partial sharp on trumpet).

When would I use the In Sen scale?

Japanese 5-note urban shamisen scale — 1 ♭2 4 5 ♭7. Modal-jazz workhorse beyond Japan.