lorom
header

;Defines

!SFX_To_Play = $18
!SFX_Bank = $1DFB
!FREESPACE = $308000

;Hijack

org $00D0E6
JML SomeLabel

org !FREESPACE

;no RATS tag because I'm lazy now

SomeLabel:
LDY #$0B                ; Set Y (game mode) to x0B (Fade to overworld) 
LDA $0F31               ;\
ORA $0F32               ;| If time isn't zero... 
ORA $0F33               ;| Don't show the time up message
BNE NotTimeUp           ;/
LDA #!SFX_To_Play       ;\
STA !SFX_Bank           ;/ Change music
JML $00D0F3

NotTimeUp:
JML $00D104