Current Use Of Backing Tracks

[RumTumJM]

I know that for the longest time the guys were a truly live band, with everything you heard on stage having been produced on that stage.

Now, in recent years I know that they've introduced some tracked audio for The Outpost (the drum machine) & Mr. Roboto (the robot/machine sounds), in particular. But, is that the full extent to which they use tracks/pre-taped audio these days?

On songs like The Greater Good I've heard an organ part that it seems no one is playing. Also, it seems like they have percussion audio playing at the beginning of Reveries. - Is Gowan triggering that stuff (notably the organ in The Greater Good) or is it tracked, like it seems?

Now, I must say that I still believe all of the vocals & instruments are live! I'm just wondering about the minor additions that they seem to have added via tracks.