The are four major triads in the diminished scale, so it can be used over major triads too. The diminished scale is basically the cheat code for improvising over anything.

This guy is so fast at juggling that I never even see the balls

yeah man, that's the face for that chord! Sonny Stitt, so underrated... and what a player!

IMO the best way to get a handle on the dominant/diminished relationship is to look at the diminished as a rootless b9 dominant.  Actually, any of four rootless dominants, every note in every diminished chord is the b9 of a dominant, etc.  But this way it's all symmetrical, forget about "half/whole" vs whole/half etc.  It's just whole up/half down from all chord tones.  More importantly it connects the dots as far as what's going on there.

Brit talk show style manic energy.   Enough to power the space station and pump enough water to  make the Mongolian Deserts bloom.

I like how the diminished scale can sound almost whole tone like (or Lydian) when the flat 5 or sharp 11 gets used.

Im a guitarist and really enjoy your videos. I like the fact that you really expose the idiom, it's phrases. Thank you

You have take away a blindness from my eyes.

Thank you, this is a really helpful video. Also you have the best ever facial expressions on a jazz tutorial video.
I had not thought much about diminished patterns over a minor chord before - thanks for highlighting this, I will try it.

On the technical side this is a bit beyond me, but I do love a good diminished scale.

8:44 - "you don't need to play it that fast" - noted!

Hi Josh! I am missing your videos full of jazz wisdom and humor!

I can't believe I found this video so long after its release. I love diminished! It's such a great tool. Cannonball, Dex, Coltrane, you name it they've used it. Though personally as mainly a Baritone player I'm a sucker for the brilliance of Pepper Adams and Gary Smulyan, those dudes can absolutely rip diminished lines.

Really helpful video, I like the way you count down during the song example to show where the pattern is. Best video I've seen on this topic. Subscribed. Thanks.

Diminished chords and scales are (2,1), therefore they represent movement by the knight or the first skew symmetric scale generated from alterations on major/minor.

Horace Parlan's favorite lick was example #2.

You could also play Cdim7 over Cmin because A B C D Eb and F are common.  The consonance of a line is directly proportional to the number of common tones with the chord it’s played over.

What an excellent, useful lesson. Plus, you sound really great! Subscribed.

Thanks!  Now I have to go back to the woodshed!

I was waiting for that 3rd one