Originally Posted by: darickmendes

https://www.guitartricks.com/lesson.php?input=29273&s_id=2488 sorry for the confusion

Got it, thanks! Those chords have odd names because the notes of the open strings have to be accounted for. There are two things happening in that lesson.

1. The same shape is being used to slide up the fretboard on some strings. This results in the process I described in my previous post. Same shape but different notes results in a different chord. This would be easy if you leave out the open strings.

For example, slide an E major chord shape up 1 fret & you get an F major chord.

|-------------|

|-------------|

|--1----2-----|

|--2----3-----|

|--2----3-----|

|-------------|

But you have to play just those fretted notes. Or else move the open strings up as well.

|--0----1-----|

|--0----1-----|

|--1----2-----|

|--2----3-----|

|--2----3-----|

|--0----1-----|

Which is how we get barre chords.

2. The open strings in that tutorial do not change. So they must be accounted for. So, we figure out what notes they are & how what interval they are according to the root note of the chord being played at the time.

Again, slide an E major chord shape up 1 fret & you get an F major chord.

|-------------|

|-------------|

|--1----2-----|

|--2----3-----|

|--2----3-----|

|-------------|

But if we just leave the open strings where they are, we get this.

|--0----0-----|

|--0----0-----|

|--1----2-----|

|--2----3-----|

|--2----3-----|

|--0----0-----|

Now we have to figure out the name of that 2nd chord by accounting for how the open strings relate to the F chord. So we label the note names & then the scale degree from the note F.

|--0--(E)-(7)-----|

|--0--(B)-(#4)----|

|--2--(A)-(3)----|

|--3--(F)-(1)----|

|--3--(C)-(5)----|

|--0--(E)--(7)----|

So this chord is an F major 7 add #4. And you can use the slash chord notation because the E noteis in the bass & not one of the main scale degree notes that make up the chord 1st-3rd-5th

So, you get F major 7 add#4/E.

This the process used to name all chords. Pick a root note, then label all the notes being played as some scale degree interval from that root note. If the chord has a lot of notes that are unusual intervals related to the root note, and not part of the scale degrees used to make the chord (1-3-5), then it's going to have an unusual name to account for all those ornamental, extended harmony notes.

I explain the basics of chord names in this lesson.

https://www.guitartricks.com/lesson.php?input=13626&s_id=824

Hope that helps!