Watch the 1 3 5 Structures online guitar lesson by Brad Carlton from Guitar Lab: Open String Universe

This lesson uses a root position major triad on the 5th, 4th and 3rd strings in various positions combined with the 2nd and 1st strings open. The first voicing is a CMaj7. The voicing is 1 3 5 7 3. It will accept ionian or lydian modes. The second voicing is a C#7#9. The voicing is 1 3 5 b7 #9. It is contained within the half-whole diminished scale. The third voicing is a D6/9. It is voiced 1 3 5 6 9. There are four scales that contain this chord: Ionian, lydian, mixolydian and overtone. The fourth voicing is simply an E chord voiced 1 3 5 5 1. The major triad is a subset of the following scales: ionian, lydian, mixolydian, overtone, mixolydian b6, phrygian dominant and half-whole diminished. The fifth voicing is an FMaj7#11. The voicing is 1 3 5 #11 7. The lydian mode is the only scale that contains this chord. The sixth voicing is F#7add4. The voicing is 1 3 5 4 b7. This chord is contained within the mixolydian, mixolydian b6 and phrygian dominant scales. The seventh voicing is a G6. It is voiced 1 3 5 3 6. The applicable scales are ionian, lydian, mixolydian, overtone and half-whole diminished. The eighth voicing is an Aadd9. It is voiced 1 3 5 9 5. An add9 chord is a subset of ionian, lydian, mixolydian, overtone and mixolydian b6 scales. The ninth voicing is a Badd4. It is voiced 1 3 5 1 4 and is contained within the ionian, mixolydian and phrygian dominant scales.