What grade is fantasie impromptu op 66 for piano?

The Fantasie-Impromptu, Op. 66, by Frédéric Chopin is generally considered to be at an advanced intermediate to early advanced level of difficulty. It requires a high degree of technical skill and musical expression, including a wide range of dynamics, articulation, and pedaling. Some specific challenges in the piece include:

1. Complex rhythms and syncopations: The Fantasie-Impromptu is characterized by intricate and syncopated rhythms that require precise timing and coordination. The main melody often plays against contrasting rhythms in the accompaniment.

2. Rapid arpeggios and scales: The piece features numerous passages with fast-moving arpeggios and scales, which require nimble fingers and a consistent touch.

3. Trills and ornaments: Chopin frequently uses trills, mordents, and other ornaments in the Fantasie-Impromptu, which add ornamentation and expressiveness to the music.

4. Dynamic contrasts: The piece requires frequent changes in dynamics, ranging from delicate and lyrical sections to powerful and emphatic passages.

5. Sustained melodies and pedaling: The Fantasie-Impromptu includes long, sustained melodies that demand careful phrasing and sensitive use of the sustain pedal.

Overall, the Fantasie-Impromptu, Op. 66, is a demanding piece that presents both technical and musical challenges. While it is not as technically difficult as some of Chopin's other compositions, such as his Études, it still requires a high level of proficiency and musical maturity.