http://youtu.be/Wq_ir0vjGXk?t=4m26s

Here the link where Broderick and Lomenzo break down the headcrusher solo.
I have a pretty good grasp on Theory but im getting a little confused on how you can use the same scale in two different keys within the same riff.

I was just wondering if someone could explain it a bit better as ive been trying to figure it out to gain a better understanding. It starts with a series of tritones (which im not sure how to create but have memorised the shape) a hungarian gipsy minor, an A Harmonic minor and D harmonic minor along with some Arpeggios thrown in there E major and Fsharp major 11.

From what i gather the Emajor would be played over the Open Es and E5 chord in the rhythm. and the Fsharp over the Fsharp5. but the rest im not so sure about, He mentions focusing back to the flatB5 and im guessing because thats what the 8 bar rhythm ends on each time round.

I was just wondering if people could explain the use of the Tritones and scales and how they work, where and why.

Heres the rhythm section.
``````

Riff 9 (Solo Rhythm)
e|--------------------------------------|
B|--------------------------------------|
G|--------------------------------------|
D|--------9------10------7------7\6-----|
A|--------7-------8------5------5\4-6\5-|
E|-000000---0000----0000---0000-----4\3-|
******   ****    ****   ****
e|---------------------------------------------|
B|---------------------------------------------|
G|---------------------------------------------|
D|---------------------------------------------|
A|--------5h7------8p5------5h7-----------8888-|
E|-000000-----0000-----0000-----0000-6666------|
******     ****     ****     **** **** ****

Keep repeating above and then final time play:
e|--------------------------------------|
B|--------------------------------------|
G|--------------------------------------|
D|--------9------10------7------7\6-----|
A|--------7-------8------5------5\4-6\5-|
E|-000000---0000----0000---0000-----4\3-|
******   ****    ****   ****
e|--------------------------------------------|
B|--------------------------------------------|
G|--------------------------------------------|
D|-----------------------------------3--------|
A|--------5h7------8p5------5h7------1--3--2--|
E|-000000-----0000-----0000-----0000----1--0--|``````

Gear:

Charvel So-Cal Style 1 HH
Jackson Pro Series RR24M
Dean Dave Mustaine Signature VMNT

JCM 2000 TSL 100
Last edited by Spitty33 at Jan 6, 2012,
my old guitar teacher told me that once you are good enough at theory that you can get around playing out of key for the hell of it
Okay I think I have a plausible explanation. D Harmonic Minor and A harmonic minor both share all the notes used in the solo riff apart from the FlatB. There for both the D and A harmonic minor scales can be used without too much clashing.

edit: Ive looked into it a bit more and there are actually no notes that clash in any of the scales, The notes in all scales including the Gypsy minor and all found in the Roots of the 5 chords or the 5 itsself.
Gear:

Charvel So-Cal Style 1 HH
Jackson Pro Series RR24M
Dean Dave Mustaine Signature VMNT

JCM 2000 TSL 100
Last edited by Spitty33 at Jan 6, 2012,