Music theory is very interesting and it does make sense when one examines it.
One profound realization that came to me whilst reflecting upon the grandeur of the roles of numbers in music was how very crucial the numbers 3 and 4 are. When you're reverse engineering compositions, look for patterns in fours. Even in 3/4 songs, the sections still tend to be 4 bars each.
Some good easy ones on this site you might try this with are Lisa McCormick's 12 or 13 Christmas songs using G, C, and D chords. These chords are great for guitarists to know as I, IV, and V (one, four and five) chords. They are all major. The cool thing on guitar is that you can use the same geometrical shapes with a capo and change the key. To know what key you are changing it to, you need to know all 12 notes in the chromatic scale on the 6th string. Here they are (in order):
Open 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th
E F F# G G# A A# B C C# D D# E (again)
So the twelfth note is the same as the open one. Any time you want to play the same note on a higher string, the formula is note fret number + 12. Example: That A on the third string, second fret? Say 2 + 12 = ? Right, the next A on that string is on the 14th fret. Works every time. My Godin SD22 guitar has 24 frets and I like the simplicity of having 2 guitars there basically. A lot of old guitars only went up 12 frets, especially acoustics.
I will probably do a blog post on this type stuff on my site
http://www.fretzeroguitar.com and maybe even post an explanatory video as this is hard to explain in a forum message with only text.
Also, remember that time cycles in multiples of 4 in life - 12 hours each section of the day. There are 12 different notes. There are 12 different musical keys - so literally there is one key for every hour of the day.
Also, music and a healthy life really do go hand-in-hand:
http://www.lifestylebreak.com/family/music-and-life-a-partnership-for-health/
~ Zac Sullivan ~ :cool:
Free Guitar Lessons - Free Fretty Friday Videos @
http://www.fretzeroguitar.com/