Installing the core NSP package grants access to a massive amount of content right out of the gate:
If you want to optimize your gameplay experience further, let me know: THEATRHYTHM FINAL BAR LINE -NSP--US--Update 1.0...
If you’re asking for for a 1.0 update on Switch US region, the initial release (1.0.0) simply included the base game + 385+ songs (base + Digital Deluxe). Later updates (e.g., 1.0.2) added: Installing the core NSP package grants access to