Key Signature, an excellent question
I guess what I 'meant' was that the intervals between notes, half or whole steps, in the major scale follow a specific pattern. Hopefully I illustrated correctly.
About other more interesting scales...
Learn the major scales to build foundation; however, you get something else with the major scales called modes. Take the C major scale but start
from a different note:
CDEFGABC Ionian, Major scale, Major triad
DEFGABCD Dorian, minor with a flat 7, Minor triad
EFGABCDE Phyrgian, minor with a flat 9, Minor triad
FGABCDEF Lydian, Major with a raised 4th, Major triad
GABCDEFG Mixolydian, Dominant 7th Major triad(Used extensively in blues)
ABCDEFGA Aeolian, Minor (relative minor to C Major) Minor triad
BCDEFGAB Locrian, half diminished, dimished triad, a dark sound
There is a lot of mileage you can get, 7 scales for the price of 1. Also adding a 7th to all of these chords would get you more "flavor":
CEGB C Major 7
DFAC D minor 7
EGBD E minor 7
FACE F Major 7
GBDF G7 (Dominant 7th)
ACEG A minor 7
BDFA B half diminshed
Many other interesting scales are also derived from these scales. If you take the time to learn this much in all 12 keys, you will have 84 scales and associated chords in your vocabulary. It will also be easier to relate other scales to you with this knowledge. And, so you don't get bored, check out the diminished scale, this is a very interesting scale and leads to other discussions:
In the key of C: CDEbFF#G#ABC, transpose to "all" keys. You will see that there is an economy to this scale. I'll let you tell me what it is.
Have fun with it....
ttyl....
