I’m still a little unclear on what the notes are supposed to be, though maybe that’s a feature and not a bug.
I think John Cage’s ideas are fascinating, and wonderful food for thought, but at the end of the day (and it certainly is the end of the day) I am a troglodyte. I like music that moves me in one way or another. I like songs. I like singles. I even like to dance.
The first two notes I (tentatively?) choose are the tonic and minor third (or major sixth). I use these terms very roughly, but it’s a relationship that I’ve always been enthralled by, and it seems to function in a particular way across a wide range of musical styles:
https://www.youtube.com/watch?v=eAedphqfm7k
And then, if it helps to have more notes, I’d add the fourth and the minor second.