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+====== Playing music at $A000 - $FFFF "behind" kernal ======
+Ok, you saw the simple IRQ music player I added previously, now let's play some music inside the IRQ that is outside the $0400-$9fff area. How do we come about it? Well, simple really. We need to turn off the kernal (SET #$35 to $01) initialize the tune and then turn the kernal back on (SET #$37 to $01). You do the same to play the music as well. This is an example for a JCH/DMC tune at $A000.
+<code>
+      !to "musplr+.prg",cbm
+      *=$0810
+      SEI
+      LDA #<IRQ
+      LDX #>IRQ
+      STA $0314
+      STX $0315
+      LDA #$7F
+      STA $DC0D
+      LDA #$1B
+      STA $D01B
+      LDA #$01
+      STA $D01A
+      LDA #$35 ;TURN OFF BASIC KERNAL
+      STA $01
+      LDA #$00
+      JSR $A000
+      LDA #$37 ;TURN BASIC KERNAL BACK ON
+      STA $01
+      CLI
+      JMP *
+IRQ   INC $D019
+      LDA #$00
+      STA $D012
+      LDA #$35
+      STA $01
+      JSR $A003
+      LDA #$37
+      STA $01
+      JMP $EA31
+      *=$a000-2   ;-2 to remove the load adress
+      !binary "music.prg"
+</code>