This is an arranger who is based midi sequencer.
Competitor of BandInbox, it differs significantly.
This is the same software that Jammer 5 but with 116 styles and 53 drums, without the possibility of adding style.
PC, no pb install
Looks a bit old, correct manual
The app is very Light Coats and only a few MB
After many years of using jam 3, especially to play (coaching), so I decided to update
Given the lack of style and inability to add styles, I migrated in Jammer 6
However this software is correct and sufficient for its price