So imagine you have a toy piano and you play the note "C". Then you play the note "C#" on the same piano. But wait, what if you wanted to play the same note as "C#" but with a different name? Well, that's where the enharmonic scale comes in.
The enharmonic scale is like a secret code for musical notes. It's a way of saying that two notes that sound the same can have different names. So that note you played on the toy piano can also be called "Db" (pronounced "dee flat").
It's like when you see a word that can be spelled in a different way but means the same thing. For example, "color" and "colour" are spelled differently but they mean the same thing. In music, "C#" and "Db" are like two different spellings for the same note.
So why do we need an enharmonic scale? Well, sometimes it's easier to read or write music if we use certain notes instead of others. And sometimes we want to use a certain type of scale like the "F sharp minor" scale which has a "C#" instead of a "Db" because it makes more sense musically.
In summary, the enharmonic scale is like a secret code for musical notes that allows us to use different names for the same sounding note.