While on the final Organon vessel, Rufus will find himself giving an inspirational speech (Demagogue) before leading thousands of Organons in the Organon anthem. If you skip this minigame, you will void the trophy.
Label the rows (the empty spaces, not the lines) top to bottom, 1-5
Solution: 5 / 4 / 3 / 2 / 3 / 5 / 3 / 1 / 4 / 4 / 3 / 4 then wait for Rufus to finish singing (there's a marker on top of the music staff to show his progress)