8,720
edits
Changes
m
→Whole-Half Patterns
Notice we end at the same exact shape we started with, and lo and behold the notes are exactly the same - although the strings are lower than the original 3 by one half step, we are playing 1 fret position higher now. From here, if we continue the scale, we will simply repeat the same set of patterns.
This is powerful stuff. Each w-h pattern occurs in at least pairs of adjacent strings. If we know the 3 notes in our key on a single string, we know the string either above or below will have the same pattern. '''Ascending, we know that the w-h patterns go in this order: 3 w-w, 2 h-w, 2 w-h, then repeat.''' When we change from w-w to h-w, we shift our index finger placement upwards 1 fret.
If we know the patterns for 2 adjacent strings, in all but 2 cases, we can derive all the patterns. For example, if we know this:
Notice that 2 strings gives us 6/7 notes in the scale. But we can derive the entire scale from even less. Consider some 4 note patterns:
|o|-|o|-|o| w-w |o|-|o|-|o| |-|-|-|o|-| must be either a w-w or w-h to be "under" a w |o|-w; given note indicates must be w|o|o|-h|
|o|-|o|-|-| could must be w-h |o|-|o|x| |-|o|-|o|-| must be h-w or w |o|o|-|o| |o|o| must be part of h; w-w would require w |o|o|-w |o| or w-h underneath but string is |o|-|o|o| |o|o| must be part of h-w; so must be |o|x|-|o| or w-h |o|-|o|x| We can take this further, with 3 note patterns: |o|-|o| |o|-|o|x| |o|-|o|-|o| |-|o|-| implies |o|o|-| o| or must be h|o|-|o|o|-| |o|o| |o|o|-|o| |o|-| implies |o|x|-|o| or | This breaks down to the following rules.* Anytime a note lacks a P4 above it, we know the A4 above it is the leading tone.* Anytime we see 3 consecutive whole steps, we know the last of those notes is the leading tone.* Anytime a note has a P4 and d5 above it, we know that note is the leading tone.* Anytime we have 2 different half-wsteps, we can find the root and other notes of the scale
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