Lili Boulanger (1893-1918) French composer. At the time the youngest ever to be awarded the prestigious Prix de Rome. She grew up in a family of many accomplished musicians and composers and decided early on to become as good, if not better. She set her goals high, like winning compositional awards, and fought her way to reach it although her health constantly made it hard for her to do so. She was extremely self-critical and destroyed manuscripts of her music that were not up to her standards (any more), which is why the works list is rather shorter than it perhaps should be. To my ears and soul, this is so strong music that really takes advantage of all the possibilities of an orchestra.
For orchestra: D’un matin de printemps & D’un soir triste.
For choir: Les Sirènes (soprano solo, mixed chorus and piano)
Chamber music: Nocturne for violin/flute and piano, or any of the strong songs.