Guitar chord theory reference table – summary of chord types, chord symbols and spellings
The table below lists what notes of the scale are needed to build different chords. All the chord spellings are given in relation to the notes of the major scale, i.e a chord described as 1, 3, 5, b7 means you need the 1st, 3rd, 5th and flat 7th of the major scale to build the chord.