The diminished scale is another very interesting scale. It's a neverending repeating pattern of whole tone, half tone, whole tone, half tone etc. For this reason there are only two main scale positions, as opposed to the 5 positions of the pentatonic scale or the 7 positions of the major scale. It also sounds terrifying in a heavy metal solo and is great for working all 4 fretting fingers as you will see. I will now take you through the 2 main scale positions, and then I will show you 3 of my favorite diagonal shapes.

Whole-Half Diminished Scale

Starting on the 7th fret, try out the Whole-Half diminished scale. It's called this because from the root note, in this case B, we play a whole step ahead (2 frets) followed by a half step (1 fret) after that. This pattern repeats endlessly.

Half-Whole Diminished Scale

This is the second position and therefore starts on the second note of the first scale shape, the C#. This is the same idea as before but flipped around so that we begin with the root note, followed by a half step, followed by a whole step, and so on.

Whole-Half Diagonal

Because of the repetitive nature of the diminished scale, you can arrange your fingerings into really interesting diagonal shapes like this. This one is exclusively the "Whole-Half" fingering.

Half-Whole Diagonal

This one is exactly the same as before except instead of using the "Whole-Half" fingering on the B (7th fret), we will be using the "Half-Whole" fingering on the C# (9th fret)

Wide 2-nps Custom Diagonal

Here is a custom, wide, diagonal position which is a favorite of mine. It begins on the B (7th fret), skips the whole step and the half step to land on the fourth note. I then shift this pattern up and across diagonally. Wow what a sound!

Be sure to bust out these evil scales next time you encounter a heavy open E riffing breakdown!
Check out the video lesson below for the playthrough