Blue program window with music playing after the 3rd day or after the
scene with Saber in the moonlight (aka the end of the prologue)
Solution: If you are using ATI/AMD graphics of the HD 5000 series or higher, then make sure you are using graphics drivers that are of at least
16.2.1 beta or newer for non GCN products; despite not being listed on that webpage, this fix also applies to some early "APU" integrated graphics such as the AMD E-350 which has integrated Radeon HD 6310 graphics.
(do not confuse this with Intel's integrated HD Graphics 5000 nor with the much newer Radeon RX 5000 series)