The DMUS_IO_CHORDMAP structure contains information about a chordmap. It is used in the Chordmap Form.
typedef struct _DMUS_IO_CHORDMAP {
    WCHAR   wszLoadName[20];
    DWORD   dwScalePattern;
    DWORD   dwFlags;
} DMUS_IO_CHORDMAP;
   Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in dmusicf.h.