Your're most welcome, Naaz.

Vaigai Kariyil Oru Paravai is a line by line lift of the telugu song the composer was ramesh naidu.

Ponnanganni was the only SG song in Nakshathiram.
Naan kattil mele is the only SG song in Neeya.

Apart from "malai charalil" there is agood song in "Oru kudumbathin kathai" (Dir :dorai).Any lead?

The title song is hummable.- not great Oru kudumbathin kathai ithu anbu karangallal inaivanthu"
Aayiram aayiram aandin munne aarambamanadhu manith inam was it also from the same movie?

O_IS_G - vaanam inge mannil vandhadhu adhan vaasal ennai vaa vaa endradhu (JC,SJ)-another original song in nakshathiram

agni theertham has good songs, Hope that it's original
dEvi un paadham thanil..(KJY)
oru boopaaLam arangErum...(KJY)

Amma Pillai had a great poetic number in "Iniya Thendralae Iru Kaigal Veesivaa"

Ramki

I doubt,i have heard the original of vanam enge mannil.As a point, the original might not be from Sivaranjani (Telugu Nakshathiram)

I saw this old Karthik-Shobana movie which had music by SG. I think the movie's name is "Sattathai..... something" Anyway, pretty good music here by SG.