It begins with Do Mi Sol Si Re ... ie C E G B D F A C E ...

these are the tools on almost any song to a symphony.


Notes taken at odd numbers ie 1 3 5 7 9 11


The whole series C E G B D F A C E G B D ...


From this is derived:


C E G B
D F A C
E G B D
F A C E
G B D F
A C E G
B D F A


A very good composer such as Etic Woolfson may put them in the right order for a song:

The notes played together on each line below form the introduction but they also appear on the verse (some lyrics shown in para thesis)
            As
A C E  far as my
G B E eyes can (G bass with 6th ie E above it)
F A C E  see
E G B D
F A C E
E G B D
D F A C
E G B D
A #C E A


Old and Wise - Alan Parsons Project
https://m.youtube.com/watch?v=FDlDKvidYbk


See also:


Bach Bass Rules - Bach, Niedt - PDF