What key is Dance of the Sugar Plum Fairy in?
Dance of the Sugar Plum Fairy is written in the key of E Minor. According to the Theorytab database, it is the 3rd most popular key among Minor keys and the 8th most popular among all keys.
Is Dance of the Sugar Plum Fairy hard piano?
It's a fun but quite challenging arrangement. It's written in the original key of E minor. It is almost the same as the orchestral version, but it's arranged for a piano solo.