Claus Kucher wrote to tell me about MIDI-file-arranger Robert Finley.
At his home page is a fine description of his MIDI sequencing techniques,
including these topics:

  Architecture , Melodic Lines, Harmony, Phrasing, Expression,
  Recording Techniques, Patch Choice, Reverberation, Editing Techniques,
  Orchestral Scores, Synchronizing Orchestra with Piano, Pan Effect.

Robert Finley's web site is at

   http://www.ultranet.com/~rfinley

Robbie Rhodes