Drew, that song is full to bursting with non-diatonic chords.
Your analysis and naming is good. I don’t think there is a D7 in it. The F would be bVII rather than VII b.
The chorus is fully diatonic - apart from that single bar of F.
The verse is wildly non-diatonic.
And there is not a single minor chord anywhere to be found.
I hope that helps.
Cheers 
| Richard | JustinGuitar Approved Teacher, Official Guide & Moderator
Hi Tomislav. Good question. There are two approaches to using Roman numerals with diatonic and non-diatonic chords.
Justin uses all upper case Roman numerals and abbreviations (Maj for major etc.).
A different way is to use upper case for any major (including dominant) and lower case for any minor or diminished.
Let us suppose that the chord built on the root note Eb in the example you give was Eb minor. It could be written as:
bV min (keeping the V part as upper case and writing min after to indicate the type of chord) …
or
bV or bv (using lower case to indicate that it is minor therefore not requiring the abbreviation min).
My preference is upper and lower case.
Justin uses all upper case with the qualifiers written after the numeric value.
It is good to be aware of both conventions.
I hope that helps.
Cheers
| Richard | JustinGuitar Approved Teacher, Official Guide & Moderator
i don’t understand how if an F is in the key of G how is it not a VII major? i don’t understand where the flat comes from in the questions on the learn more section
The note F is not the Key of G it is F#. The VII chord in a diatonic chord sequence is always a diminished chord.
If you flatten the F# it becomes and F all this is in the earlier lessons on chord construction.
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I think I’m missing something simple here. Why is E in the Key of G a VI major? Shouldn’t it just be chord VI just based on the major, min, min, major, major, min, dim formula?
If it was “just” the VI chord, it would be Em. But since this is E major, it has to be labelled as VI major.
Ok so any chord that is unlabeled is considered a major? Like there is no Emaj label? I’m sure that was early on somewhere and I glossed over it. Based on the formula we were using in this lesson I would have just translated an E to be Emin based on that.
That is correct. There are some conventional labels like that, e.g. if a chord is marked as “7” as in Gb7, it means it’s a dominant 7th chord, and not a major 7th or a minor 7th (these would be marked Gbmaj7 and Gbmin7, respectively).
This lesson is on Non Diatonic chords. In the key of G, E is a Em chord so EM is a non diatonic chord.