For many beginners, the half diminished chord or m7b5 chord is a weird mysterious chord, but it is actually a very flexible chord to have in your vocabulary
In this video, I am going to talk about how to construct and play them and then go through how you can use them in a song, not only as half-diminished chords but also as a lot of other chord sounds.
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Half Diminished chords are difficult to get used to and hard to improvise over. In this video I am going to go over some of the Quartal arpeggios that work great for m7b5 chords and show you how to easily add them to your vocabulary. I also go over some examples of how you might use these arpeggios over a half diminished chord in a minor II V I cadence.
Half Diminished Chords in a Minor Cadence
The examples in this lesson are all on a II V I cadence in Dm:
Eø A7alt Dm6
The first example is using two quartal arpeggios on the Eø, and another two on the A7alt.
The first quartal arpeggio is from A: A D G, which gives us a m11 sound over the Eø with 11(A), b7(D), b3(G). The second one is from the b5: Bb E A basically spelling out a m7(b5(11) chord with the b5, root and 11th in the arpeggio.
On the A7 altered I am using a quartal arpeggio from C and then one from C#. The one from C# you may recognize as the top part of an A7(#9).
Quartal arpeggio Exercise no 1
If you want to work through the Quartal arpeggios for the Eø in this key (which is D minor), then you can check out the exercise here below which includes the two I used and is covering all diatonic quartal arpeggios in the scale on the middle string set.
Quartal arpeggios moving in 4ths
This example is again using the Quartal arpeggio from the b5: Bb E A, and then continues with the quartal arpeggio from E on the next string set: E A D. This way of connecting the arpeggios in 4ths gives us two common notes between the arpeggios. It also creates a movement with a large range.
The A7 altered line is a scale run from the root ending with a chromatic phrase that resolves to the 5th(A) of Dm6.
Quartal arpeggio Exercise no 2
To check out the arpeggios on the top string set you can play through this exercise. Notice that if you do this with alternate picking it is really a great way to develop flexibility!
The Maj7 Arpeggio from the b5
The Maj7 arpeggio from the b5, in this case a Bbmaj7 arpeggio, is making a guest appearance. This arpeggio is often overlooked but is a perfect fit for the Eø sound. In this example it is chained together with the quartal arpeggio from the root: E A D.
The A7alt lick is turning around on the #9 and then descending down the scale. Before resolving to the 9th(E) of Dm6 it catches the C# on the A7.
Half diminished dilemmas?
The m7b5 or Half diminished chord is one of the chords I get asked about most often, so I hope you can apply some of these arpeggios in your own playing.
If you want to see more videos exploring the options on a half diminished or m7(b5) chords then leave a comment on the YouTube video or send me a message via e-mail!
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The minor II V I is often a troubling cadence for begining Jazz guitarists. That is probably because the II is a m7b5 or half diminished chord which can be tricky and also because you have two or three different scales going on through the cadence.
In this lesson I want to go over the chords and the scales you need to improvise over them. From that I will take 3 arpeggios, one for each chord, and talk about how you practice them and with some examples of lines over the minor II V I hopefully give you some ideas about how to improvise over this cadence.
All the examples in this lesson are over a II V I in the key of C minor as shown in example 1
The scales that I chose for each chord are fairly straight forward, the Dm7b5 chord is seen as coming from C minor so that is the scale I use. For the G7 I chose the altered scale which is one of the possible options. C harmonic minor would be another obvious choice. The tonic chord I play in the cadence is a m7 chord, but it could ahve been a m6 or mMaj7 chord. Since it is a Cm7 I chose Dorian as a scale sound, and otherwise you could use Aeolian which is the same as Natural minor.
To keep it easy to approach from a technical point of view I put all the scales and arpeggios in one position on the neck around the 8th fret C. If you start working on this you should probably also move it around to other positions once you get more familiar with the arpeggios and the cadence.
Choosing the arpeggios are easy for the Dm7b5 and Cm7 chords since you can just use a diatonic arpeggio for each of those. The G7alt arpeggios is a bit more tricky since the G altered scale has a Gm7b5 as a diatonic arpeggio on the G. To find a good substitute you could look at a G7(b9b13) voicing and realize that it is often played as an Fm7b5 with a G bass note (I demonstrate this in the video). This means that you can use the Fm7b5 arpeggio as to convey the sound of the G7alt chord when you are improvising which is what I chose to do in this lesson. The arpeggios
When you practice the arpeggios the first thing you need to do is of course to just play through them and learn them one a t a time. Once you can do that you should try a few patterns like groups of 3 and 4 etc. To connect the arpeggios to the progression you can practice them like this:
Once you can do this you should try to connect the arpeggios like shown hereunder. Practicing the arpeggios in this way over the progression is a way to get closer to how you improvise, something that you should also strive after when making exercises.
The idea is to start playing the arpeggios over the progression and then when ever the chord changes to continue the movement with the note that is the closest in the next arpeggio. It’s quite tricky to get started with but very rewarding when you start getting the freedom while improvising.
With an exercise like this you get a completely new exercise if you start on a different note, and if you keep on going it should keep mutating into new exercises, also a very healthy way to keep your ears and mind busy while practicing something as simple as arpeggios.
Example lines
The first example starts with a straight forward Dm7 arpeggio from the root to the root. I am playing it in a skipping pattern that I use a lot, so I start on the 3rd and then go 1, b5, 3 b7 etc etc. On the G7alt I am basically just playing the descending Fm7b5 arpeggio, but it is broken up rhythmically. The first part is a swept arpegigio from the 7th to the root, and then it continues down from the 7th in the next octave. The Altered line resolves to the 5th(G) of Cm and from there it runs up the Cm7 arpeggio, skips down to the root and then up to the fifth.
Motiefs should always be a part of your melodic tool box, and so should the triad on the third of the chord you play over! The first part of the 2nd example is purely based on a using the Fm triad over the Dm7b5 and then using it as a motief and using the Fdim triad over the G7alt. The altered line resolves via the F to the Eb on Cm7. The Cm7 line is first moving up from the root to the 3rd before it descends down to the rest on the 5th.
Th last line is starting out with the D dim triad over the Dm7b5. In this example it gives a sort of bluesy flavour. After that it descends down the arpeggio to encircle and resolve to B over the G7alt. The Fm7b5 arpeggio is played ascending and skips around at the end to resolve to the 5th(G) of Cm7. The final part of the line is employing a slide to add some blues to the Cm7 arpeggio.
I hope you can use the arpeggios and exercises I went over here to get started making some melodically strong solos that really dig into the harmony and negociate the minor II V I cadence.
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