article about salil chowdhury :

composing music for NELLU [a Malayalam movie directed
by RAMU KARYAT] salilda stayed with the tribal people
in Wynad forest in Kerala.He was so keen to know the
traditional instruments which the tribes r using.The
group song 'AYE KAIYODU KAI, MAIODU MAI'in NELLU is
sung by Mannade,Kishorekumar and Jayachandran.For this
song he used traditional drums in order to get the
original effects.It is a wonderful folk song
composition - a perfect number.

Here is the song, but I detect the voices of Manna Dey and Jayachandran only.

Click to view attachment