Alex,
>1. I am looking for a sequencer with good realtime notation capabilities - I'd like to display each of the 16 MIDI channels on their own staff of the score. Does Jammer Pro (or Live) support this?
No staff view yet but it does have Piano Rolls and Event Editors.
>2. Do you know if the auto-accompaniment functions of Jammer Live are also found in Jammer Pro? or are they unique to Live?
PRO has similar features but more compositional controls. LIVE has a newer
composition engine though. The next version of PRO (5) will have the new composition engine from LIVE and the two programs will be able to share styles.
>3. Do you know if the Jammer Pro (or Live) support standard sequencer functions like step editing, etc.
LIVE has a piano roll editor, transposition, and quantizing for working on style riffs.
PRO has piano rolls, event lists, controller fills, time shifts, transpose, velocity scaling, velocity compression/expansion, chord detection, harmonizers, duplicators, a tracks window and a measures window for song
arranging, but doesn't have step entry yet.