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Blues Rock


(@cmaracz)
Estimable Member
Joined: 18 years ago
Posts: 155
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Is there any fundemental difference in theory between the typical guitar blues and blues rock? I mean, the difference between the slow, sad, blues and the more energetic, sometimes even joyful blues (example some of CCR or Clapton's songs) is hugge in terms of sound and effect. But fundementally do you change some thory when working witht he two or is it all in dynamics, effects, etc.?


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(@furious_b)
Eminent Member
Joined: 18 years ago
Posts: 36
 

The basic scales and chord progressions are pretty much the same. As far as theory goes theres not a whole lot of difference. But in alot of slow blues songs chord subsitutes are used for the dominant 7th chords. For example, a normal blues consists of all 7th chords, Red House - Jimi Hendrix, almost every clapton blues song, Most BB King songs will use just dominant 7th chords, that's what gives the blues it's sound. But more jazz blues, or slow blues will use chord substitutes such as, 9th, 13ths, etc. As far as scales go the blues scales is pretty much universal, then there are modes and things you can throw in, but there really isn't much difference, other than some distortion.


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(@jonnyt)
Reputable Member
Joined: 20 years ago
Posts: 336
 

You mean like the difference between using the Blues Minor Scale or the Minor Pentatonic Scale (almost identical) versus using the Blues Major Scale?

E doesn't = MC2, E = Fb

Music "Theory"? "It's not just a theory, it's the way it is!"

Jonny T.


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(@furious_b)
Eminent Member
Joined: 18 years ago
Posts: 36
 

Not exactly, i mean using the blues scale, which is bascially the same as a minor pentatonic (including the b5 or blue note) and using major pentatonics along with it, if you combine the the two you basically get the mixolydian mode. (though the minor pentatonic has the b3)


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 xg5a
(@xg5a)
Reputable Member
Joined: 18 years ago
Posts: 485
 

Another difference is if the time is in swing 8th's or staight 8th's. Also, some jazz influenced blues use other chords besides the normal 1st, 4th, and 5th. For instance:

|:Bb7///|Eb9///|Bb7///|%|Eb9///|%|Bb7 / Ab7 / |G7///|Cm///|F7///|Bb7 / G7/|Cm / F7 / :|

Also note that it is in the key of Bb.(this is to allow for horns in different keys than concert C) In more traditional blues, you usually see it in the key of A, G, or E.


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