Power chords are very similar to barre chords. As you remember, barre chords (and other chord formations) are comprised of R-3-5. Power chords are simply R-5. Power chords are not considered true chords since they lack the 3rd and are called dyads. It makes sense, dy meaning 2.
A lot of modern rock songs use power chords so you will see them come up in the songs later on. They are much simpler and they sound great. Don’t forget to practice your other chord formations also! Below are some examples of power chords.
A minor 7th chord is just like the major 7th only with the minor chord formation formula. Let’s take a look at what this looks like. A C minor scale is C D Eb F G Ab Bb C, Root = C, 3rd = Eb, 5th = G, and 7th = Bb. The formula for this chord construct is R-3b-5-7. Just like the major 7th chord, a standard triad is built out of the R-3b-5 and the 7th tone is added in.
Here are some of the common ways that these chords and notes will be referred to. Cm7, Dm7, Em7, Fm7, Gm7, Am7, Bm7, Cmin7, Dmin7, Emin7, Fmin7, Gmin7, Amin7, Bmin7.
MINOR OPEN CHORDS
Everything is like with the major chords, Solid dots represent finger positions. Diamonds represent played notes. X es represent a string or note not played (muted).
Each of the minor chords consists of a triad in notation. The formula for a minor triad is as follows: R- (flatted) 3- 5. This means if your C minor scale is: C D Eb F G Ab Bb C, Root = C, 3rd = Eb, 5th = G. Notice that it is exactly the same as a minor triad except for the flatted (b) 3rd. Also, the only notes played will be the R-3-5.
Here are some of the common ways that these chords and notes will be referred to. Cm, Dm, Em, Fm, Gm, Am, Bm, Cmin, Dmin, Emin, Fmin, Gmin, Amin, Bmin.