B3/Hammond Organ - Key Click

Check out Tower of Power - Knock yourself out, and Squibb Cakes

Chester Thompson is my no. 1 favorite

https://m.youtube.com/watch?v=x0kknUo11oQ

Also my no. 2 favorite - check out Brian Auger at 3 mins you get a great solo lasting more than two minutes!!

https://m.youtube.com/watch?v=dCKZPEleI-U

My number 3 is well known Booker T - check out his new Potato Hole but this is the song he is known for

https://m.youtube.com/watch?v=nVAFjvRBswY

BTW - I think  you are looking for the percussive effects from the b-3 and c-3 that can be added on the top keyboard (rather than "hearing the keys"). You will hear this in most jazz or funk. Here is an explanation

https://m.youtube.com/watch?v=EEb0miSlyZA

Obviously you won’t get that sound in church unless you hang out with Jake and Elwood

https://m.youtube.com/watch?v=EeQyoTSgllc

Excellent suggestions - thank you very much for these.  I appreciate you taking the time to pull this list together!

Greg

Technical input that might be of interest, though not providing exactly what Greg requested. This from my bro-in-law who is a talented musician (keyboards his forte) and studio owner (engineering, production, mastering). He’s in the AllMusic Guide for what that is worth. He owns a couple of Hammonds including a B3 that he refurbished. Safe to say he’s intimately familiar with how they work. His comments:

"Key click" and "percussion" are two different things. They are commonly confused with one another.
Key click was the result of an electrical contact being made when a note is depressed on the organ. Key click was considered a flaw and Hammond used frequency filtering to help suppress this.
There are ways to accentuate the key click by tapping directly out of the organ’s preamp and going straight into a mixing console or guitar amp. Organists like Keith Emerson, Jon Lord and many others utilized this sound.

Percussion was a design feature that was introduced in 1955 on the B3 and C3 models and then later it was available on most other models. The percussion effect is a set of four tabs on the top right of the console that when depressed, adds varying degrees of harmonic attack to the note. Sort of like when you strike a marimba or vibraphone. It is in no way like the sound of key click.

Ghosthouse - Thanks for this and please thank your BIL for me,  It was indeed the physical key click (electronic switch) that I was looking for.  I'll definitely have a look at his suggestions - Keith Emerson, Jon Lord etc.

I love this forum!

Greg

Dr. Lonnie Smith.

@gregkohanmim - 
You are very welcome, Greg.  Try Deep Purple in Rock...the track, Child In Time.  It might have some of the sound you are looking for.  Here's a version on YouTube...

https://www.youtube.com/watch?v=OorZcOzNcgE&ab_channel=deeppurpleos