It produces professional quality PostScript output which is as good as or better than that of any desktop Notation program.
It can play and record with rock-solid timing using Midi instruments.
It lets you create scores quickly; its flexibility is a boon to your creativity. Cut and paste, transpose, drag almost anything in your score, quickly add and delete parts and extract them with one click, etc.
What's new in Nightingale
Version 5.2.2 changes include a Combine Parts command, MIDI mapping, MIDI patch changes mid-file, active pan and pedal MIDI controls, and import/export of MIDI tempo marks.