Third Position Scales

When learning to play in a new position it is a good idea to get to know where to the most important notes are. If you know where the chord tones of the I, IV and V chord as well as a few scales you are in good shape. Third position is a popular especially for minor blues so knowing some third position scales is a good idea.

Third position

Most of the time we reference a C harmonica when talking about specifics. Playing a C harmonica in third position will put you in the key of D. This means that the root note of any scale will be on 1, 4 and 8 draw. One way of looking at it is that third position is second position two holes up. For reference, take a look at the circle of fifths and try to make out for yourself why third position on a C harmonica is the key of D.

The blues scale

A you may already know the blues scale in scale degrees is:

Root b3 4 b5 5 b7 root (one octave up)

In D this transles to:

D F G Ab A C D

In tab for the middle octave this becomes:

4 5 6+ 6′ 6 7+ 8

third position scales - blues scale

The blues scale in D.

Quite an easy scale actually, only one bend and it is hole 6 which is not too difficult unless you use a high pitced harmonica. Also you don’t have to bend for the b3, it is there for free which is a big reason third position is very suitable for minor blues.

The lower octave require quite a bit more bending skills:

1 2” 2/3+ 3”’ 3” 4+ 4

The minor pentatonic scale

The minor pentatonic scale is almost the same as the blues scale but the lowered fifth is not part of it. The tab then becomes:

4 5 6+ 6 7+ 8

Very simple.

The major pentatonic scale

The major pentatonic scale will be imcomplete in the middle octave as it contains the third instead of the minor third. In scale degrees it is:

Root 2 3 5 6 root (one octave above)

In D this is:

D E F# A B D

The F# is not available in the middle octave (unless you do overblows) and becomes this in tab:

4 5+ (missing) 6 7 8

It can be played completely in the lower octave but it require more bending skills.

1 2+ 2′ 3” 3 4

Applying third psoition scales

Playing in a new position require quite a lot of practice but if you translate some of the riffs you already know to the third position scales you will have a good start.

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Minor Key Chord Tones in Third Position

Playing in minor keys may not be the first thing you try on the harmonica. Even some fairly advanced players stay away from it. If you are strictly a second position player minor keys may be problematic for you. A pretty easy way of fixing this is to learn to play in third position. Don’t get me wrong here, playing in third position doesn’t mean that you automatically play in minor or that you can only play minor. Third position just makes minor keys easier. If you have not played over a minor 12 bar blues before then learning to find the minor key chord tones is a good way to get started. If you know where the chord tones are you can play both accompaniment and even solo.

The benefit of third position

The benefit of third position for minor keys is that the minor third can be played without advanced bending skills. This is especially true if you play hole 4 and upwards. The lower octave require more practice though. also the minor key chord tones are quite easy to find.

minor key chord tones needed for minor blues

12 bar blues in D minor

The minor 12 bar blues can be formed by replacing the every major chord with its minor counterpart. In Dm for example the 12 bar blues then consist of Dm, Gm and Am.

Minor key chord tones

If you play a C harmonica in third position you will be playing in D or Dm. The chord tones for the chord in Dm are:

  • Dm – D F A C (root, minor third, fifth, minor seventh)
  • Gm – G Bb D F
  • Am – A C E G

The chord tones for Dm in tab:

  • D     1, 4, 8
  • F     2”, 5, 9
  • A     3”, 6, 10
  • C     1+, 4+, 7+, 10+

The chord tones for Gm:

  • G     2, 3+, 6+, 9+
  • Bb   3′, 10+”
  • D     1, 4, 8
  • F     2”, 5, 9

The chord tones for Am:

  • A     3”, 6, 10
  • C     1+, 4+, 7+, 10+
  • E     2+, 5+, 8+
  • G     2, 3+, 6+, 9+

The Bb (minor third of Gm) is the one chord tone that is the trickiest. Playing the 3 unbent can sound horrible so make sure you play it in pitch. The 10+” is quite tricky as well. The whole step bend on hole 3 takes some practice too but there are easy options for playing the A elsewhere on the harmonica.

Get comfortable with it!

The best way to get comfortable with minor blues is to put on a jam track and practice playing the chord tones over it. With a little bit of practice you will be able to move around quite freely.

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