| Microsoft DirectX 8.1 (C++) | 
The IDirectMusicComposer8 interface permits access to the composition engine. In addition to building new segments from 
IDirectMusicComposer8 is a define for IDirectMusicComposer. The two interface names are interchangeable.
In addition to the methods inherited from IUnknown, the IDirectMusicComposer8 interface exposes the following methods.
| Method | Description | 
| AutoTransition | Composes a transition from inside a performance's primary segment (or from silence) to another segment, and then cues the transition and the second segment to play. | 
| ChangeChordMap | Modifies the chords and scale pattern of an existing segment to reflect a new chordmap. | 
| ComposeSegmentFromShape | Creates an original segment from a | 
| ComposeSegmentFromTemplate | Creates an original segment from a style, a chordmap, and a template. | 
| ComposeTemplateFromShape | Creates a new template segment, based on a predefined shape. | 
| ComposeTransition | Composes a transition from a measure inside one segment to another. | 
Requirements
Header: Declared in dmusici.h.