These collections often include unreleased tracks, live recordings, and rare regional songs (Bengali, Marathi, etc.) that are hard to find elsewhere.
Several non-profit fan groups (e.g., "The Kishore Kumar Archives") maintain private, invite-only Drive links containing rare recordings – radio broadcasts, unreleased rehearsal tapes, and multi-language songs (Bengali, Marathi, Gujarati). To gain access, you often need to prove your collector's bona fides by sharing a rare song in return. kishore kumar songs google drive