These are the notes that you should have selected using the major scale formula starting from "C"
C D E F G A B C " The scales root note to it's octave"
You can use your instrument to figure this out start on the "C" on the fifth string 3rd fret you can go up the neck one half step at a time.
This is an actual fret board
You can start from any note with the same formula to get what ever key you want to be in. If you want to be in "A" start on "A" it's that easy
You really need to know the interval names first to understand chord formulas. 1-3-5-7 is referring to the root note P1, M3, P5, M7 intervals as shown in the chart below.
This is a “Diatonic” Harmony Chart showing how notes in the key of “C” Major are harmonized in thirds to make up the chords in the key; all that means is that starting from the P1“C” in this case, Move to the third note in the key the note is “E” and than the third note “G” and then the fourth note “B” to harmonize the “I” Chord in the key; this being the C major seven. If you continue to harmonize in thirds all the way in the key you have made a C Major 13 chord.
|C E G B||C Major 7||1-3-5-7||I||Major 7|
|D F A C||D minor 7||1-b3-5-b7||ii||minor 7|
|E G B D||E minor 7||1-b3-5-b7||iii||minor 7|
|F A C E||F Major 7||1-3-5-7||IV||Major 7|
|G B D F||G dominant 7||1-3-5-b7||V||D7|
|A C E G||A minor 7||1-b3-5-b7||VI||minor 7|
|B D F A||B diminished 7||1-b3-b5-b7||VII||dim(b5,b7)|
C D E F G A B C D E F G
Now that you can see this; harmonize the “ ii ” chord in the key starting with the note“D”, inadvertently the chord formula is 1-b3-5-b7 it is important that you understand your intervals before you progress into chord construction. Here I’ll show you how I am harmonizing notes in thirds using these highlighted notes as an example below for
the second (ii) chord in the key of C major:
C D E F G A B C D E F G A B C
Notice that I used two octaves to demonstrate how to harmonize the notes
It should be making sense by now if you are guessing that you should start the iii chord from the note "E" then you are right!
Later we will be learning how to construct patterns on the fret board as they are a result of being notes in the key.
These patterns will help us learn our fret board a lot better.