I used Moodscaper SE for the soundtrack - I just hit play and recorded 12 minutes of it - then selected a good starting point for 5 minutes worth and cut the other 7 minutes. Did a little audio fade in/out and that's that! There was a surprising amount of serendipitous synchronicity (LOL!) in the audio tone changes and the video scene changes. I recommend listening with headphones or loudspeakers because Moodscaper SE puts out some real deep bass! I hope you enjoy watching and listening!
https://m.youtube.com/watch?v=9AUPnZE8aEs