| DirectX SDK | 
| Track type | Band. | 
| Purpose | Download instrument data for the track's bands. See Playing a MIDI File with Custom Instruments. See also GUID_Unload. | 
| Data type (*pParam) | IDirectMusicPerformance pointer. | 
| mtTime | Not used. | 
Setting this parameter by using IDirectMusicSegment::SetParam downloads only the instruments in the first band track. To download instruments in the other tracks, iterate through the band tracks by using IDirectMusicSegment::GetTrack, and call IDirectMusicTrack::SetParam on each track.
This topic pertains only to applications written in C++.