Triad chords contain 3 notes played together, or overlapping.
There are 4 different main qualities of triad chords - major, minor, augmented, and diminished.
Each chord differs by the 2nd and 3rd notes as shown below.
|Triad chord quality||2nd note quality||3rd note quality|
|diminished o||minor (m3)||diminished (d5)|
|minor||minor (m3)||perfect (P5)|
|major||major (M3)||perfect (P5)|
|augmented +||major (M3)||augmented (A5)|
|sus 2nd||major (M2)||perfect (P5)|
|sus 4th||perfect (P4)||perfect (P5)|
An augmented chord is usually shown with a plus symbol: +
A diminished chord is usually shown with a circle symbol: o
Each quality has a different musical flavour, but they all share the same starting note, or root, for a given key.
The Eb major chord uses these 3rd / 5th note names exactly as they are, with no adjustments.
To understand why this note is called Bbb, but it is occupying the note A position on the piano diagram below, have a look at the Eb diminished chord page, which explains how note intervals are used to name the individual notes.
A suspended chord is known in music theory as an altered chord because it takes one of the above chord qualities and modifies it in some way.
Unlike all of the triads above, suspended triads do not use the 3rd scale note, so it is not possible to classify them as either major or minor. Instead they use either 2nd or 4th note.
The order of the notes in a triad chord as described above have the root note Eb as the lowest / first note of the chord. This is triad in root position.
By moving the root note up one octave to the end of the chord, the 1st inversion of that triad is created, which now has Gb as the first note in the example above.
By moving the first note of the 1st inversion to the end of that chord, the 2nd inversion is created, which has Bbb as the first note.
Inversions do not change the notes in a triad - they simply change the note order.