Key Help!
OneWingdAngel
Oct 11 2007, 09:26 PM
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Joined: 11-October 07
i posted on another instructors thread looking for u and also nothing to do with the topic does that make me a bad person or too egar? lol im sry here is the question again

ok i have played tabs for 2 years and was starved for the theory you are dishing out i am enjoying it all and i thank you. but for the past 2 nights at work i have racked my brain on this.

does the key of a piece equal the root of the main scale used in the piece ?

i know this may not be the topic for this thread if so im sry but my brain now hurts i was ready to start my minor pentatonic scale practice when i noticed that if i use say a scale of B major (B,C#,D#,E,F#,G#,A#,
2212221 the root is B. the key would have 5 sharps in it using the circle of fifths i can see A# is 7th or the last sharp 1 dagree up is B. KEY OF B EQUALS the B scale meaning that the scale of B major is the heart of our piece
here is the confusion
say i now use the same B scale only in minor pentatonic. (B,D,E,F#,A, 32232
now this key according to what i have learned should only have 1 sharp F# 1 dagree up is G !!!!!
WHAT key of G? shouldn't in still be KEY OF B I used a B scale?
how do i know that im supposed to use a B minor pentatonic scale for the most part if the key is G?
back to my question shouldnt the key equal my root note B?
please put my mind at ease thanks
WING.

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This post has been edited by OneWingdAngel: Oct 11 2007, 09:27 PM
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OneWingdAngel
Oct 12 2007, 11:40 PM
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Posts: 11
Joined: 11-October 07
so we would also group the minor scale with the minor pentatonic scale as it would be a subset right?
i will try and work that out. the major is infact a subset so we show this with the key of G major and let that cover both . in other words no need for such thing as a key of G major pentatonic
Back to the minor scale . maybe i just need to read more ahead in your lessons but i will just ask.
how do we know if the key in question be it A or G what ever is a minor or a major? or is the key of minor scale shown by being in the key of its relative major scale
so u could go from Bmajor to B major pentatonic then u could also use its relitive minor (which i dont know yet) and minor pentitonic all in the same key ?

then i could use a major scale look at it put it down on paper. make a key. say its key of B
use the B major scale use circle of fifths on it
see its key of B
then know that i can now use B major , B major pentatonic
this would also let me know i could switch to its relitive minor and minor pentatonic all in the same key
so i guess i am asking now do we write all key signatures directly to be used with the major scale then from that we find its relitves to see the minor ?
or is there a key signature or rule that will tell us use key of B minor in stead of saying key of B major then finding the relitive?

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Andrew Cockburn
Oct 13 2007, 12:37 AM
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QUOTE (OneWingdAngel @ Oct 12 2007, 06:40 PM) *
so we would also group the minor scale with the minor pentatonic scale as it would be a subset right?


Correct!

QUOTE (OneWingdAngel @ Oct 12 2007, 06:40 PM) *
i will try and work that out. the major is infact a subset so we show this with the key of G major and let that cover both . in other words no need for such thing as a key of G major pentatonic
Back to the minor scale . maybe i just need to read more ahead in your lessons but i will just ask.
how do we know if the key in question be it A or G what ever is a minor or a major? or is the key of minor scale shown by being in the key of its relative major scale


A major scale and its relative minor share exactly the same key signature (because the 2 scales share the same notes). The only difference would be the root note. In your example, B for the Major, G# for the relative minor. Now the question becomes how to you figure out the root note from a piece of music - its mostly experience - you can tell if a piece sounds major or minor and that tells you, although it doesn't actually matter if you are just reading the music, its more important if you want to improvise over a piece. If there are chords, that will give you a clue as well. In your example, if the piece uses G#minor a lot, maybe as the first and last chords that is a big clue (but not conclusive) that it is the relatove minor.

QUOTE (OneWingdAngel @ Oct 12 2007, 06:40 PM) *
so u could go from Bmajor to B major pentatonic then u could also use its relitive minor (which i dont know yet) and minor pentitonic all in the same key ?


Correct! (G# Minor Pentatonic), but one small point, not the same key, the same Key signature. The Key signature is a notational device that gives you the sharps and flats, the key does have a notion of major and minor, so B Major and G# Minor are 2 keys that share the same key signature.

QUOTE (OneWingdAngel @ Oct 12 2007, 06:40 PM) *
then i could use a major scale look at it put it down on paper. make a key. say its key of B
use the B major scale use circle of fifths on it
see its key of B


Correct!

QUOTE (OneWingdAngel @ Oct 12 2007, 06:40 PM) *
then know that i can now use B major , B major pentatonic
this would also let me know i could switch to its relitive minor and minor pentatonic all in the same key
so i guess i am asking now do we write all key signatures directly to be used with the major scale then from that we find its relitves to see the minor ?
or is there a key signature or rule that will tell us use key of B minor in stead of saying key of B major then finding the relitive?


The key signatures are identical, the keys are B minor and G# minor - the key signature does not differentiate, you have to figure it out on your own.

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