Debussy Image No. 1 Reflets dans l'eau. About 5 minutes long. Not in minor key, but a fantastic piece that may be what you want. Does this work?EDIT: I realize this is not what you are describing, but I guess I'm inclined to suggest one of my favorite pieces that I would play if I had the ability.
Thanks klavieronin for the suggestion. It's a beautiful piece, but not quite what I'm looking to play at the moment.I really enjoyed listening to this piece (have it on repeat now ). It may not have been exactly what I asked for but I think I'm going to give it a try. It seems like it's going to be pretty challenging musically, and I don't have much experience playing Debussy, but I think it'll be worth it.