The Extensible Music Format (XMF) is a family of music-related file formats created and administered by the MIDI Manufacturers Association.
XMF is based on the idea of containing one or more files in existing formats – such as Standard MIDI Files, DLS instrument files, WAV or other digital audio files, etc.
To create a collection of all the resources needed to present a musical piece, an interactive webpage soundtrack, or any other piece of media using pre-produced sound elements.