What is the Most Difficult Scale on the Piano? What is Mirror Fingering?

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Today we are going to discover what is the most difficult scale to play on the piano. By the end of this article and video, you will be surprised at the answer!

When you are first learning scales, just figuring out the notes can be a daunting task. You look at a scale like B major with 5 sharps, and it’s tough to figure out. But when you start to play it, you discover something really interesting:

The thumbs in both hands play white keys at the same time.

Not only that, but the black keys are played with the other fingers in both hands. This is referred to as mirror fingering where both hands anchor on white keys with thumbs on the same notes, in this case B and E and the other fingers play the black keys. This makes it easier to play.

So, what about scales with a lot of flats – are they harder? Let’s take G-flat major which has 6 flats. There is certainly a lot of black ink on the page! You will discover that while there are 6 flats, there are only 5 black keys in a G-flat major scale. This is due to the fact that C-flat is a white key (the B key). Here again there is mirror fingering. However, in the B scale, the white keys in both hands occurred a half-step above (the very next key) the notes played with the thumb. The G-flat scale is slightly more challenging in that the first white key in the scale (C-flat) is a half step above the previous black key (B-flat), but the next white key (F) is a whole-step (2 keys) above the previous black key (E-flat). But at least you have the benefit of anchoring both thumbs at the same time whenever they play.

Next, we are going to look at a scale that you would think would be easier since it only has 2 sharps – D major. Here you have the challenge of having the thumbs both anchor together on D, but as you go up the scale, the right hand plays the thumb on G, but the left hand plays the thumb on A. So, you don’t have the benefit of mirror fingering where both thumbs play at the same time. This is somewhat more challenging to play.

So, what is the most difficult scale to play? Once you know all your scales, they are about equal in difficulty. However, there is one scale that presents challenges no other scales have, and that is the C major scale!

How can this be? It’s the first scale most people learn and it’s simple to learn because it’s all white keys. That’s exactly what makes it more challenging to master. You don’t have the benefit of having black keys to guide you.

You are faced with a sea of white keys!

There are no black keys to differentiate where you are in the scale. On top of that, you don’t have the benefit of mirror fingering where you anchor the thumbs on the same notes in both hands. I bet some of you are surprised, but it’s a fact that C major is the most difficult scale to play even though it may be easier to learn than other scales.

Incidentally, the resource for fingering of all the major and minor scales and arpeggios on the piano that the vast majority of pianists rely upon is:

Another Thought:

There are two major scales that don’t have any mirror fingering whatsoever. That is, the thumbs never play the same notes at all. Those scales are B-flat and E-flat. For that reason, it is arguable that those scales may be the most difficult.

Hanon: Sixty Studies for the Virtuoso Pianist

There is another school of thought that a small number of pianists adhere to which has mirror fingerings for all the scales. I would be interested in hearing from anyone who plays all scales with mirror fingering. Having learned all my scales and arpeggios as a young child, I couldn’t imagine relearning the fingering to them at this point any more than I could imagine typing on a more ergonomic keyboard where letters used most often were in the middle of the keyboard instead of the one we are all used to.

I hope this has been interesting for you and I look forward to comments on this presentation. This is Robert Estrin at LivingPianos.com 949-244-3729 Robert@LivingPianos.com