| Track type | Chordmap. |
| Purpose | Set or retrieve the chordmap. |
| Data Type (*pParam) | IDirectMusicChordMap pointer (SetParam) or address of a variable to receive this pointer (GetParam). |
| mtTime | The time, in track time, at which to add the chordmap to the track, or the time at or directly after the chordmap to be retrieved from the track. |