August 21, 1991
from Benjamin Tubb,

These files were converted from their original Orchestra-90 music
language format to MIDI format 1 files using the following programs
and equipment:

Richard Busby's PC-Orc 2.1a program, running on a PC AT clone, and
connected to an Amiga 1000 via MIDI cable, recording "live" (as
PC-Orc does not output MIDI clocks) into Dr.T's Software's KCS 3.5
Level II.
  Tempos were approximated to the original's first used one only -
likewise in the determination of time signature (i.e. steps per
measure).
  All voices were mapped to preset voices for the Roland MT-32
assuming its power up default channels of 2 thru 9 and 10.
  Only the panning controller was used.  Though a consideration
for mapping register volumes to volume controller values, was
made, the time required was considered impractical to implement.
  A steps per quarter note value of 96 was used for all files, as
being more than sufficient than that of 48 would require.

Credits:

  Jon Bokelman - the programmer of the original Orchestra-80/85/90
music language first implemented on the Radio Shack TRS-80 Model I
computer, and then later upgraded to the Radio Shack Color Computer,
known as the Orchestra-90/CC version.  He also programmed a
companion program called Piano-90 also for the TRS-80's.

  Brian Eggers - the cofounder with Jon Bokelman of their company -
Software Affair, who did much to popularize the language with his
virtuoso arrangements and being the sysop of the Orchestra-90
Forum of the language's "golden" days, on CompuServe.

  Richard Busby - the programmer of PC-Orc, which allows support
for MIDI output and, if you have a Yamaha FB-01 or Music Feature
Card, more specific support of the langauge's harmonic register
definitions for upto eight voices, as opposed to the original only 
five voices supported.

  Tim Sewell - the collector of the Orchestra-90 source files from
which the MIDI file conversions were made.

  Benjamin Tubb - the MIDI file converter who volunteered for this
project as only a dedicated ORC fan and prior ORC composer and
arranger would do.  There are over 1000 files which will be
converted and uploaded to CompuServe and GEnie as they are done for
the enjoyment of all MIDI enthusiasts.

  John Renfro Davis - still an active and prolific PC-Orc user
in the PC Orchestra message base of the Color Computer Forum
on CompuServe as are still a few "old timers" who visit.

Dedication:

  Larry Alexander - an Orchestra-90 composer and arranger whose
virtuosity inspired me more than anyone else to develop my own
abilities and appreciation for the music language before I ever
got exposed to the world of MIDI.