I just got an update and I’m pretty sure this is the missing songs from the prior version that the PC release got recently. Super excited!
[https://www.nintendo.com/store/products/hatsune-miku-project-diva-mega-mix-dlc-bundle-3-switch/](https://www.nintendo.com/store/products/hatsune-miku-project-diva-mega-mix-dlc-bundle-3-switch/)