According to one random person on reddit, not only does the Star Allies sound test have red and blue notes again, which signified Ishikawa and Ando songs respectively in Triple Deluxe and Planet Robobot, but there are also yellow notes this time too! Thanks, HAL
(The reddit post is incorrect about Ogasawara being a freelancer; he
was a freelance composer, but according to the second link in my post above, he joined HAL in August 2017)