The "All Singles Collection" you're referring to is likely a compilation of their singles released on the rare and collectible album "Reverse Rar" (not a widely recognized term, but I assume it's a typo and you meant "Rar" or more likely "Rarity").
Tagging and normalization suggestions
Here is a ready‑to‑use text string you could use for a folder, ZIP/RAR comment, or batch script: