This is an extremely valuable lesson about seventh chords and their possible usages, the harmonic demonstrations are very clear and expressive. Once again, the concepts are shown in a very straightforward and structured way. Excellent, outstanding stuff! For a better didactic impact, it's natural that some inaccuracies are intentionally dialed in to put the listener to the test. These are the ones I found out: On the maj7 chord, there is a rogue X on the fourth diagram. On the discussion about the dom7#5 chord, the interval between the G# and the Bb has to be a third because any G to any B is always a third. G# to Bb will be a diminished third. In practice, it may be easier to think about it as a "major second" even if it is theoretically inconsistent. If this still breaks the stacking of thirds principle is kind of debatable but we were only allowing for major and minor thirds, so... On the Cdim7 fourth diagram, the bb3 should be b3 and the b7 should be bb7. The remaining three diagrams have the Xs wrong (copied from above?). Thank you for the channel, I'm always thrilled to see a new video from you and I always learn something. Cheers!
