eHow launches Android app: Get the best of eHow on the go.
Summary: A dominant flat 13 chord has an added lowered sixth interval above the octave. Form and play guitar chords with tension intervals larger than an octave from an experienced musician in this free music theory video.
Thomas Marchevsky is a professional guitarist/composer and college professor. He has an M.M. in guitar from the New England Conservatory in Boston. He teaches private lessons at his...read more
"Here we'll be discussing a dominant flat 13 chord. Now, these are pretty simple. Either you're going to add the upper tension to the chord that you already known, the dominant 7 chord that you already know. Or if you can't add it, take out the fifth, and put the tension that you're looking for in its place. Let's go back to the A 7 chord that we've been using here. We had an open A string for the root, G as the flat 7, C sharp as the third, and E as the fifth. Now here we want to add the flat 13 tension. Now, 13 is the same as 6. The same way 9 is the same as 2, and 11 is the same as 4, 13 is the same as 6. Now, we know this is 5. We don't need a 5 in the chord, it's optional. Go up a whole step and you're on 6. Bring it back one fret, and you've got a flat 6, which since it's in the higher register of the chord would be a flat 13. One flat 7, 3, flat 13. You have an A, dominant 13 chord."