MusicWare Composer's  WorkBench  is  an  integrated  notator/sequencer
     program  for the I.B.M. PC line of computers, driving a Roland MPU-401
     or compatible MIDI interface.

     The Composer's Work Bench is distributed as Shareware with  a  limited
     playback  ability.  With this version, you can choose to Play Existing
     Music from the main menu and play back MIDI sequences of  any  length.
     But  if  you  choose to Modify Existing Music or Create New Music, you
     are limited to playing back only the two pages, which depending on the
     time signature and display adapter will give you 16 to 20 bars.

     You can obtain the fully licensed version with which you can Modify or
     Create  MIDI  files  of any length by sending $50 (fifty dollars U.S.)
     to:
     Dennis McNamara
     268 9th Ave.
     San Francisco, Ca. 94118