Hi Rajesh
The Title cards show the list of singers as:
S P Balasubramanyam, S Janaki, L R Eshwari, P Susheela, and P B Seenivas.
But in the film only 3 songs are available:
1) I nadina mannu-SPB-SJ-Koras
2) Ase telide ale mele-LRE (Udayachandrika and Yeshraj)
3) Nalla nijavalla A kamanu sudalilla – SJ (Dancer Kanchana and Dinesh)
There must be one more duet song by PS and PBS (for B V Radha and Ranga), which is not available in the film now.