Someone has taken the instrumental or vocal harmonies from Varanam Aayiram (songs like "Ava Enna" or "Nenjukkul Peidhidum" ) and layered it with the melody or lyrics of "When I See the Love Light in Your Eyes" .
A producer has sampled the doo-wop / jazz standard and mixed it with the synth pads or rhythm guitar from Harris Jayaraj’s soundtrack. varanam aayiram when i see the love light in your eyes.mp3
Here is your multi-purpose guide. Before developing anything, confirm what you have. Someone has taken the instrumental or vocal harmonies