Site owners would rip CDs or record TV broadcasts (think Zee Cinema countdown shows) and encode them to 3GP before anyone else. Being "exclusive" meant you had the song 6 hours before your neighbor.
You would type the exact keyword into Google or Yahoo (Bing wasn't a thing yet). www bollywood 3gp king songs com exclusive
Files that were compressed specifically to balance visual clarity with a tiny file size (often under 5MB). Site owners would rip CDs or record TV
We have moved from 144p 3GP files to 4K Ultra HD streaming. www bollywood 3gp king songs com exclusive