To download legally, look for a "Download" button inside these apps – it will save the file to your device’s music library, not as a loose MP3, but you can listen offline anytime.
(often referred to as "Marikozhunthe"), you can find it on several official music streaming platforms. Where to Listen & Download : You can stream the full Marikkozhunthae Marikolunthe En Malligai Poove Mp3 Song Download