We have been busy improving Uberchord, an app that helps you learn guitar chords with instant visual feedback. As you can see in the image on the right, the app uses guitar chord chart and symbols to display what chords you play on your guitar. For a single chord, there are many different ways to translate this into a symbol. If you read through this post as a beginner to the intermediate guitar player, you will learn a lot about how to read guitar chord chart and symbols.
Before we get started, it is important to understand what exactly a chord is. The word chord means that three notes are being played at the same time. When two notes are strummed at the same time, this is called an interval and anything with three or more different pitches is called a chord. Since a typical guitar has six strings we will be examining chords that have three to six different notes. We have a music theory blog series with a lesson dedicated to “Chords“ if you are interested in learning more, be our guest.
What about Power Chords?
So you may ask, why is a power chord called a chord and not a power interval? Power chords are typically perfect fifth intervals (for example C and G), which means that the notes are harmonious with each other, making them sound powerful so to speak.
The First Part of a Chord Symbol: The Root Note
Through extensive research on how familiar guitar chord symbols work, I discovered that there are many different systems. The only information that all chord symbols have in common is that they start with the root note of the chord and for that they use the name of that root note. The root note of a chord is the note on which a chord is built. For example, a three-note triad using C as a root would consist of the notes C-E-G.
The Second Part of a Chord Symbol: The Triad Type
Triads are characterized by their quality or type: major, minor, diminished, augmented, sus4 and sus2. The use of symbols for triads is inconsistent: sometimes the letter of the root note is a capital letter for major and a small letter for minor. In most cases though it’s always a capital letter and no additional information is given for major, because apparently it is used more frequently than any other. Only if the chord is not major it is indicated in one of many ways:
- Minor: “min” or “m” or “-“
- Diminished: “dim” or ” ° “
- Augmented: “aug” or “+”
Many notes can be added to each of these triads, which is usually done in thirds. We call these “tensions” and they are usually written smaller than the root name and the triad type (min, dim, aug, sus4, sus2). In most cases they are listed on the right side, so generally chord symbols are read from left to right like a text (unless it’s hebrew or arabic).
Seventh chords have 4 notes, the triad plus a seventh above the root.
As explained above: since the major triad is the most used one it became a habit to not give any information except for the root note. If there is nothing else but the root name that means: major triad. Whenever we read “maj” somewhere, that means that a major seventh is added to the major triad and we have a major seventh chord. This is also written in one of these ways: maj, maj7, ma7, M7 or Δ.
Suspended Chord Symbols
These are triads as well, but the third is replaced with the second (Csus2: C, D, G) or suspended to the fourth (e.g. Csus4: C, F, G). Their origin always resolves into a very consonant triad (C, E, G), although in pop and jazz they are also used outside that context.
A unique scenario arises when a chord has two characteristics with equal importance. An example for
this is “sus4” and “7”. “sus4” is the triad type and “7” is a main characteristic for a dominant chord. Normally, this would result in a symbol where the “7” would be on the right side of the “sus4”, which would make it difficult to recognize that this chord is dominant. So in this particular case we decided for our app to show the “7” above the “sus4”.
Chord Chart & Symbol Cheat Sheet
Chord Symbols for chords with more than 4 notes
Whenever a chord has more than 4 different notes its symbol of course gets “longer”, more information has to be given. Most of these do not sound as frightening as they read. In addition to a seventh chord the symbol has to tell which other notes shall be part of the chord. This happens just like before by listing all the notes as numbers, for example: D min7 9 11
The numbers tell their interval from the root. We already dealt with the sevenths. Then next we have b9, 9, #9, 11, #11, b13, 13. Since chord are built from scales and most scales have 7 notes, four of which are already occupied by the seventh chord, there usually will be a maximum of three more possible notes.
We call any chord that uses altered intervals altered chord. If it has a #5 or b5 instead of a 5 or a b9 or #9 instead of a 9 and so on. There exists a symbol just saying “7 alt”. It means you can use any tensions from the altered scale for the chord. We don’t use it, as it is not specific enough.
Chord Symbol “Shortcuts”
There are many common chord symbol shortcuts that musicians use. In Uberchord’s use of chord symbols we decided to avoid these shortcuts, and name every single tension of a chord so that our symbols will hopefully not be misunderstood. The result is not always the best readable, some symbols get very long. But establishing a system that is very clear seems much more important.
For example using a “9” or “13” as the only additional information to the root note means that it is a dominant chord (major triad with minor 7), even though “7” isn’t included in the chord symbol. A dominant chord is with a major third and a minor seventh. C7: C, E, G, Bb – it is called dominant chord because of its function within chord progressions.
The importance of consistency with Chord Symbols
Chord symbols can be very confusing. For our app, we had to find a way to use chord symbols that was consistent and easy to interpret by all guitarists. With 500 chord symbols and counting, we needed to find a consistent method to display chord symbols within our app. What makes this process the most challenging?
Uberchord includes this absolutely amazing list of ALL possible combinations of three to six pitches that can exist within one octave with a given mutual lowest note C. This list serves as a reference for the chord recognition technology, chord labeling and the graphic display of that symbol. I love this list! We made sure that it contains every single piece of information for literally every chord that can exist within the context of functional harmony.
The Uberchord app also features chord symbols beyond functional harmony to some extent. The only chords excluded were those that have three or more pitches with only half steps apart from each other. Let’s call them chromatic clusters. No one would bother finding chord symbols for most of these.