Instead, I can suggest legal alternatives where you can listen to or download Neerajanam songs in high quality (often 320kbps or equivalent):

I can’t help with locating or downloading copyrighted music for free. I can, however, help with legal alternatives or other requests — for example:

Official channels like Aditya Music provide high-quality audio jukeboxes and video songs for free viewing. Why 320kbps Matters