Lands of Lore: The Throne of Chaos - possible bug with mt32 music over munt and build-in emulator

[gabberhead]

i discovered a weird, i think, possible bug with the mt32 music in the game. i have the cd multi language version with german, english and french language. i have all files needed root folder + only the "ger" folder, because i need only the german language. when i start the game and go to the point where i can choose a caracter, some instruments of the mt32 music are wrong. i have the mt32 "old" roms in version 1.07. but when i put also the "eng" folder to the game root folder, start the game again with the german language and got to the point where i can choose the caracter, the mt32 instruments are now right. i discovered, the only needed file in the eng folder is "startup.pak" file. with this file, the music sounds right. and also, when i put the startup.pak file from the ger folder into the eng folder, the music sounds also right. when i delete the eng folder again, and start the game, the music sounds again wrong. the instrument which i mean is the the, i dont know the name, i would say the snare drum. without the startup.pak file instead of the snare drum, there is a bird peep sound.
is this a bug in the game engine, or is the eng folder needed for the game? but i think, it is not need, when the same startup.pak file from the ger folder and put in the the eng folder, the music sounds right.