The attached contains a tutorial on making a BB song from an existing midi file. It also explains the three layouts for OPB files and how to make them. It was created in Logic Pro, but the various techniques should be available in other DAWs.
It also contains 3 different, but very similar OPBkh versions of Pete Townshend’s Let My Love Open The Door.
included are the completed BB midi part files and a null file.
Let My Love Open The Door and song creation tutorial.zip (2.1 MB)
The song uses the Motown Stevie Funk drumkit.