SMB Title Screen - Add Music

[SMB2J-2Q]

Hi,

Does anyone know how, for the NES version of Super Mario Brothers, I can change what bytes are used for the arguments in the title screen data so that I can add music to it? Like, for instance, the water theme (byte $02 in the area music data) or the overworld theme (byte $01 in area music data).

;music constants

(area and event music data)
%10000000 ($80) = Silence

(area music data)
%01000000 ($40) = StarPowerMusic
%00100000 ($20) = PipeIntroMusic
%00010000 ($10) = CloudMusic
%00001000 ($08) = CastleMusic
%00000100 ($04) = UndergroundMusic
%00000010 ($02) = WaterMusic
%00000001 ($01) = GroundMusic

(event music data)
%01000000 ($40) = TimeRunningOutMusic
%00100000 ($20) = EndOfLevelMusic
%00010000 ($10) = AltGameOverMusic
%00001000 ($08) = EndOfCastleMusic
%00000100 ($04) = VictoryMusic
%00000010 ($02) = GameOverMusic
%00000001 ($01) = DeathMusic

~Ben