Cassiopeia is a Greek myth and here Rabadan tells the story through a wonderful duet. The two flutes glide their way through elements such as beauty and punishment, mostly in complete harmony but with plenty of flourishes and a lot of notes. The piano part is substantial which adds another dimension to the power of the narrative. Well worth a try.
Difficulty level, roughly compared to ABRSM exam grades. 0 is beginner, 9 is advanced (beyond grade 8).