I noticed you had Down Below listed as possibly having errors in Pro Mode. As the author I can confirm that Down Below in addition to all the other songs I have authored are fully functional and play perfectly fine.
So you can add all the songs I have authored so far to this list .
Kramus - Embrace Your Rage
Kramus - Down Below
Songs To Wear Pants To - Shoot The Zombies
Songs To Wear Pants To - Stevie
Your Heart - Spring