You’ve already written out all the notes in four keys in this lesson (C, D, A, and E♭). In this challenge, you’ll write out the notes in all 12 keys.
You learned in a previous chapter that when a key starts with an enharmonic note name (like D♯/E♭) you should almost always use the ♭ name. The exceptions were F♯/G♭ and C♯/D♭. In those cases, you could use either. But because this is a challenge – challenge yourself! Write out the notes for both versions of all five enharmonic keys. The challenge is figuring out the double sharps and double flats.