Where can I look for the gear Jean-Marc Lederman uses?

Find and submit the software, keyboards, and other instruments used by Jean-Marc Lederman.

If the artist is active on social media, check places like their Instagram feed and look for musical equipment they can be seen using.

You should also do a Google image search for things like "Jean-Marc Lederman studio" and "Jean-Marc Lederman live" and spot gear that way.