Dial 543211888 and select your song
After 28 days dial 543211808 and deactivate hello tune(press 2&1)
After 2 days repeat the above procedure and activate the hello tune.
continue this procedure and Enjoy...............
Change Ur HelloTune Song Free!
This trick works only one time.Just download HT Manager application from Airtel
Live & install it on ur phone.
Open it & browse the songs, you can set one song for free.