this is interesting. I was watching a video provided by a jazz instructor and he said that most melodies move up a 5th and down a 5th from the key centre and stay within that range. I tried this on Summertime and Fly me to the Moon and it seems to be the case. Seeing your video immediately made sense to me. I’m going to investigate your approach further. Thanks.

Very helpful, subscribed

Great approach! Thanks!

Yes, better way

You say start at the key center, but what you played sounded like a mode, not the major scale. I am confused.