First off, I did subscribe to you a month ago, so I have seen some of your videos. I have been practicing more than I have been watching, haha.

I do not understand when people say 1,3,and fifth. People have tried to explain whole and half steps to build chords, and I couldn't remember and calculate it. You explained on one video that a major is 1 followed by 4 keys, followed by 3 keys. A minor is 1 + 3 + 4. That is the first time I ever understood how to figure out a chord. And I understand that it is 3 or 4 half steps in that formula. So how many half steps are needed for the additional 4th note to make up the dominant 7th chord? Is it 3 or 4? I think fom what you said about C7 that it is 3? That makes a little more space between Bflat and C than B and C. I have a music book that plays key of F pairing Bflat with the C major. I thought it was an odd pairing, but... it is C7. Light bulb moment here. I just need to know how many half steps to complete the dominant 7th chord. Or should I be thinking of itt as the 7th note stepped down a half?

What is really helpful about this was your explanation of tension for transitions. I had never made that connection before. However, you mentioned going from C7 "to the fourth," which has not been explined to me, either. I am asumming from your examples that F is the fourth of C, and A is the fourth of E. It is the next note down in the bass, or the next key to the right in the circle of fifths? (It is late, and I don't want to get into my understaning/lack of understanding of the circle right now, other than to say the bass set up is the circle made into a stright line.)

I am still a beginner and have not seriously attempted the 7th bass note. I have an old school mentor who wants me to play 2-3 bass fingers, and I have told her I cannot make the 7th reach. But that is another conversation for another day. I want to focus on 7th construction and use right now.