Sites promising "All Malayalam songs free download 1970 to 2025" are almost always illegal. These sites (often hosted outside India) generate revenue through malicious ads. They claim to have the complete A-to-Z library, but in reality:
Owned by Airtel, Wynk has a surprisingly vast library of Malayalam tracks. It is particularly popular for its curated "Mood" playlists.
Saavn was one of the pioneers in streaming Indian regional music. Now merged with Jio, it boasts perhaps the largest collection of Malayalam songs, including rare tracks from the 60s and 70s.