Introduction
Dissonance. Dissonance is when two notes or tones sound unpleasant when combined, and do not harmonize. I suppose there's a technical explanation as well, but I don't know it. A dissonant note can be found easily. Make a mistake. That's what dissonance is. Playing a note outside a scale is an easy way to find it.
In essence, dissonance can add an expressive feel to your playing. You can develop your scale chops perfectly, and be able to play them at Mach I, but yet not be able to feel expressive. When you use dissonance, it adds almost a vocal quality to the pattern, allowing the lick to sing.
How To Do It
Alright. We're going to use a simple A Minor Pentatonic to demonstrate dissonance. For those who don't know, the A Minor Pentatonic looks like this:
e|-----------------------------------5--8------------------------------------|
B|-----------------------------5--8------------------------------------------|
G|-----------------------5--7------------------------------------------------|
D|-----------------5--7------------------------------------------------------|
A|-----------5--7------------------------------------------------------------|
E|-----5--8------------------------------------------------------------------|
Simple, no? Now, let's look at a simple A Minor lick:
^1/2
e|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|----7---7--5---------------------------------------------------------------|
D|---------------7-----5--7--------------------------------------------------|
A|------------------7--------------------------------------------------------|
E|---------------------------------------------------------------------------|
Simple and straightforward, pretty common too. But if you add dissonance to the lick, it becomes more expressive and noticeable:
^1/2
e|---------------------------------------------------------------------------|
B|-----------------------4---------------------------------------------------|
G|---7---7--5----------------------------------------------------------------|
D|-------------7-----5--7-----------------------------------------------------|
A|----------------7----------------------------------------------------------|
E|---------------------------------------------------------------------------|
Immediately after you hit the final A, jump your index finger to the 4th fret on the B string and allow both notes to ring.
Here is a list of dissonant notes that I use most of the time in A Minor:
e|--5------------7-------6---------------------------------------------------|
B|------4----------------5---7---5-------------------------------------------|
G|--8-------6----5-----------5---7-------------------------------------------|
D|------7---5--------6-------------------------------------------------------|
A|---------------------------------------------------------------------------|
E|-------------------5-------------------------------------------------------|
The list goes on and on and on. Just try to find notes that sound bad together.
One other way I play dissonant notes is by playing regular, perfect sounding notes together, and then bending one of them slightly to create dissonance.
*Bend 7 slightly* *Bend 7 Slightly*
e|--------------------------5------------------------------------------------|
B|--------------------------7------------------------------------------------|
G|---5-----------------------------------------------------------------------|
D|---7-----------------------------------------------------------------------|
A|---------------------------------------------------------------------------|
E|---------------------------------------------------------------------------|
And so on. You get the idea.
The last technique is self explanatory. During a scale, lick, or pattern, just strike an open string that clashes horribly with the scale you're playing in. Strike an open B on either of the high E string notes, extreme dissonance ensues. Easy enough.
Conclusion
Dissonance is extremely important to guitar players. If you don't exploit it in your playing, you at least should have a basic understanding, because it affects your playing every time you accidentally hit an open string, or every time you miss a fret, or are out of tune.
This is my first Column, so please leave your opinions.
- Shard Heilia (ShardNet@gmail.com)