Where can I look for the gear Jeffrey Peter Mayhew uses?

Find and submit the pianos, keyboards, synths, microphones, and other instruments used by Jeffrey Peter Mayhew.

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 "Jeffrey Peter Mayhew studio" and "Jeffrey Peter Mayhew live" and spot gear that way.