In level 8 (press F10+W, enter "8" to get to that level), the music is not emulated correctly (ignore speed difference). Compare attached samples, paying attention to the "beep" effects. Using ykhwong's CVS build 02.14.2006 (don't think though that the FM emulation has changed). I understand DosBox uses a FM core from someplace else, so if you want me to report this elsewhere, direct me to it.