The provided file name suggests a collection of 14 Downloadable Content (DLC) packs for the US version of on the Nintendo Switch.
: Chart Hits, Classic Rock, and Country Hits. Let's Sing 2023 [14DLC][US] NSP.rar
Based on the Official Nintendo eShop and Xbox Store listings, the 14 typical DLC packs for this edition include: : Volumes 1, 2, and 3. Best of 90's : Volumes 1, 2, and 3. Legendary Hits : Volumes 1 and 2. Party Classics : Volumes 1 and 2. The provided file name suggests a collection of