lol ... enjoyed the idea of punk boogie with head banging the piano a required part of the act - not sure Charles Darwin would agree though ;) And thanks for reminding us about these chords. I did see a lesson about them, maybe a year ago, back when I first discovered your channel, but had forgotten about them. But a nice surprise is that trying to play them now has shown me that my skill level's quite a bit higher now. Didn't even need to pause, watched once and my brain and fingers got it straight away. That didn't happen the first time I watched. And the change is entirely thanks to your Dr K youtube channel! So thanks again, what you're putting out is much appreciated. General feedback: I've found it really helpful the way you've done short lessons about intro and outro techniques, on top of everything else. It's been hugely satisfying for me to put the pieces together, and suddenly find that I've just played a boogie from start to finish, using nothing but the chops you've been handing out via youtube. I might start calling you "General Dr K" because what you're really doing here is giving us all the weapons we need to join a boogie woogie army and wage all out boogie war on the world :)
I use 7th chords a lot for endings as my music teacher was a jazz pianist, also for blues a good one is ending on a C blues or boogie is right hand C E F Gb G A B C, followed by left hand C major and right hand C major with a Bb added to it. Shuffling the notes only on the last chords but that's just my way,