重力和弦技巧
Developing the technique required to play the power chord is a pivotal step that marks the movement away from the beginning levels and into the intermediate ones.
The power chord is the first moveable chord shape most beginners learn. It's a chord shape that can be played on the sixth string or fifth string, and on any fret. That means when you learn one power chord, you learn two dozen of them.
Let's start with a power chord on the 6th fret. Use your first finger to play the root note, A in the case of my demonstration. Use your third and fourth fingers to play the other notes. And be sure to mute the rest of the strings with your first finger.
Now let's move it to the 5th string. We're going to use the same shape, but now we have to mute the sixth string as well. We can do that with the tip of our index finger like this.
So these are the two patterns. Now you can move them up and down and come up with your own progressions. I'm just going to move them around a bit randomly and see if I can come up with something interesting.
I'm hoping if you play these for a few minutes you'll feel a bit of tiredness in your fret hand wrist. That's good. We want to build up the strength and endurance in the fret hand, because that's what will enable us to play barre chords later on.
吉他乐曲的大多数曲风都会有随机的 power chord（重力和弦），尤其是在摇滚乐中。Power chords 归根结底是下面两种和弦手形，和弦的根音是 the lowest note（最低音）， 第6弦或第5弦。
这些重力和弦将会挑战你按弦的手腕的力量，也将会为你将来弹barre chords打下基础。要真正的掌握它们，你要尝试用重力和弦弹尽可能多的 chord progressions（和弦进行）。你几乎可以仅用重力和弦弹所有的乐曲，只要用重力和弦替代所有的同名的和弦就可以了。这个方法大多数情况下都适用，很简单。
示例转换：
Diatonic (4-Part) Chords （本来的）
| Gmaj7 Emin9 Amin7 D7 |
|
Power Chord 代替
| G5, E5, A5, D5 |
|
尝试一些 chord progressions（和弦进行）：
| A5 D5 G5 C5 |
|
| G5 B5 C5 A♭5 |
|
| B5 G5 A5 D5 |
|
| C5 A5 D5 G5 |
|
小贴士：
- 如果你弹这些 power chords感觉很困难的话，把吉他送去店里，叫店员帮你调到 “lowest-action” （弦高调到最低）。
- 一开始最好用lightest strings（最细的弦）。对木吉他而言，用 “.01’s”的弦。如果你弹电吉他，试试用 “.00’s” 或者 “.00’s”。
- 如果还是感到困呐，你可以考虑用 finger-training tool，你可以在店里或者网上买到。另外，你也可以尝试 grip training tool，例如 Captains of Crush，在国外的 body-building 网站可以买到。
本日目标：
- 每天练习power chords直到你可以控制你的手腕力量，将每个音都弹的很清晰。
- 一旦你可以清晰地弹出和弦以后，增强耐力。连续几次扫拨重力和弦的 chord progressions，到手酸为止。
- 尝试用你自己编写的 power chord progressions进行即兴弹奏。只需要改变patterns，边弹边编曲。这也是摇滚乐怎么来的！
As the creator of Hub Guitar, Grey has compiled hundreds of guitar lessons, written several books, and filmed hundreds of video lessons. He teaches private lessons in his Boston studio, as well as via video chat through TakeLessons.