Etude No.5 Opus 10 is a piano piece by Frédéric Chopin is also known as the "Black-Key". Why? The answer is obvious - most notes in this songs are located in the black keys on the piano. Let's look at how virtuoso pianist, Lang Lang plays it:
Oh, by the way, becuase of the nature of the song (most keys are black keys on the piano) he can also play it by using an orange!
Now, to further understand the complexity of this study (etude), let's look at how the keys move on the piano:
