“Amber’s Descent” (*1/2 out of four) was a bewildering bore about a pianist (Kayla Stanton) struggling with PTSD after surviving an attack and moves to a rural farmhouse to compose her next symphony; initially it seems to be going very well and the music seems to be writing itself but she is besieged by all kinds of hallucinations and delusions and is wondering whether they are real or imaginary. Passable beginning seems elegant and creepy but the film itself descends pretty quickly and becomes arbitrary and over-the-top yet still pretty dull.