Hi everybody! I've just released a new poster!
7th chords in Roman Numeral System for all modes of the Major scale plus a tool for Modal Interchange
Get the web version for free only at: https://bit.ly/30GHDJE
What is this poster?
It lists 7th chords for all modes of the Major scale in Roman Numeral System for quick sight-reading and perception.
How can this help me?
■ It allows you to quickly look up a required diatonic chord on any degree of any mode of the Major scale
■ It’s a 2 in 1 poster meaning that it implicitly shows you the formula for all modes of the Major scale which you can make use of when improvising a melody (instead of chords). Formulas are unobtrusively integrated into the table as prefixes to the roman numerals so you don’t have to look up another reference material to find the formula for a scale
■ It is a common table which is to be treated as a recipe for building both chords and scales. Knowing the formula you can play any scale and chord on any starting note. In other words, 1 table for all 12 keys (C, C♯/D♭, D, D♯/E♭, etc.)
■ It is useful when you explore modes and want to create a modal chord sequence to play a melody on top of
■ The layout of this table is a perfect tool for Modal Interchange - a composition technique that is particularly useful when you are creating a harmony and want to deviate from the main key to introduce more colors into your song to make it more interesting and unique. E.g., when playing a chord sequence that is diatonic to the main key you can borrow a chord from the parallel mode and insert it into your existing chord progression
■ You get to know and understand the scale(s) better. For example, looking at the diagram you notice what kinds of 7th chords occur naturally in the scale and which don't. If you are looking for a scale to contain Minor major seventh chord or a Diminished seventh then you will see that a Major scale is not a good fit as it does not contain them, but a Harmonic minor scale, on the other hand, does contain both of them
But you are encouraged to find your own application to this poster and share with the community! I may also update the poster with your usage scenarios!
Feel free to leave a comment on the website or here, I would really like to hear your feedback to know what can be improved in this and my future posters. Any comments are welcome. For example, do you like it when it is colourful? Or would you rather prefer a more calm look? Or maybe more vivid? More fun? Do you like it when the guide/legend to the poster is on the poster itself or on a separate sheet? And if we talk about music fundamentals and theory, what other poster you would want to have right now?
And I would sincerely appreciate a helping hand in spreading out the word: if you like my work and find it useful, please share a link with your friends, make a re-post or give a like. That would mean a lot to me!
Yours truly, Oleg
















