Enclosure Lab

Two-note enclosures · target C · key C major

Target

Symbols

U♭ chromatic above · Uᴅ diatonic above · L♯ chromatic below · Lᴅ diatonic below · T target

Two-note enclosures

8 formulas · One note above and one below the target, in both orders, with chromatic and diatonic neighbours.

01

U♭ – L♯ – T

ra – t – d

C♯ – B – C

02

L♯ – U♭ – T

t – ra – d

B – C♯ – C

03

U♭ – Lᴅ – T

ra – t – d

C♯ – B – C

04

Lᴅ – U♭ – T

t – ra – d

B – C♯ – C

05

Uᴅ – L♯ – T

r – t – d

D – B – C

06

L♯ – Uᴅ – T

t – r – d

B – D – C

07

Uᴅ – Lᴅ – T

r – t – d

D – B – C

08

Lᴅ – Uᴅ – T

t – r – d

B – D – C

Why am I practising this?expand
What it teaches
How to surround any target note with approach notes from above and below before resolving to it.
Problem it solves
Lines that always land straight on chord tones sound plain and predictable.
Physical skill
Enclosures demand small, accurate half-step fingerings and clean voicing of the resolution note.
Theory reinforced
Approach notes are diatonic or chromatic neighbours; only the final note needs to be a chord tone.
Improvisation
Enclosures delay resolution, create tension and let you target any chord tone from any direction.
Ear training
Train the pull of each neighbour note into the target, above and below.
Common mistakes
Accenting the approach notes instead of the target, or rushing the final resolution.
Recommended tempo
Start in eighth notes at 50–60 BPM on one target, then move the shape through all twelve.
Increasing difficulty
Apply one enclosure to every chord tone of a ii-V-I, then displace it rhythmically by one eighth note.
Mastered when
You can enclose any requested note, from either side, in any key, without hesitating.
How to practise it
  1. 01Choose a target note and sing the enclosure in sol-fa before playing it.
  2. 02Play the shape slowly, accenting only the target.
  3. 03Move the same shape through the cycle of fourths.
  4. 04Apply it to the third and seventh of each chord in a progression.