Beginning Blue’s Theory

Blue’s is a great genre for beginners as the foundations of blue’s theory is relatively simple to understand, Upon which, you can add your own dynamics and layers to give the soundscape your own personal touch.

Blue’s Scale

The Blue’s Scale is a 6 note minor scale (minor Pentatonic with an added ♭5) with the interval formula being: R – 3 – 4 – 5 – 5 – 7

Below are the notes for the Blue’s scale in the key of C.


The ♭3 (also refereed to as the Blue’s note) and ♭7 give the scales minor characteristic. These are the intervals that tend to be expressed differently to make them stand out. For example; this could be achieved by bending a note on a guitar (bending the  3 down to the Root or the 7 up to the Root is a common blue’s practice)

The ♭5 (or diminished 5th) is often played as a passing note to add some tension into your melodic lines. 


Blue’ s rhythm guitar

Blue’ s rhythm is often played in a 12 Bar loop, with our bass notes playing our I – IV and V notes of our given key. 

From here we add our 5th, 6th and ♭7 intervals, learning to play it in rhythm.

Check out our lesson on 12 bar blue’ s to see sheet music and tablature on playing rhythm blues as well as a more detailed explanation of typical blue’s chord formulas! 

Click here for our 12 bar Blue’s lesson!