Tuning - Major Diatonic, Part 17 (2nd Position)

Let's now look at the I7 Chord in 2nd Position (same as the V7 Chord in 1st Position)

I7 Chord
- G B D F

I7 Chord Blues Scale
- G Bb C Db D F G

First Octave: 1+ 1' 1 2" 2
Sequentially this is complete, running out of range for the bottom two notes of the scale.

Second Octave: 2 3' 4+ 4' 4 5 6+
This is complete and very usable.

Third Octave: 6+ (7) 7+ 8 9 9+ (10"+)
This octave only has one of the three blue notes needed to make the blues scale. Though not a very bluesy range of the harmonica, if you play with a lighter feel the high-end is very usable.

I Chord Major Pentatonic Scale
2nd Position has the greatest flexibility in its ability to play blues, light and anywhere in between. The Blues Scale is for playing bluesy and the Major Pentatonic Scale is for playing light. Here it is...

Major Pentatonic Scale
1 2+ 2 3" 3 4 5+ 6+ 6 7 8 8+ 9+ 10

If you're serious about playing the harmonica you'll memorize these two scales (be able to play it in whole notes, half notes, quarter notes, eighth notes and triplets).