Before an hour I was listening a song from a hindi movie Karwaan… a nasir hossain movie starring Jitendra and Asha Parekh, The movie was most famous for the song ” Piyaa toooo ab to aaja…. monica ….I love you “. That song made Asha Bhonsle a star and cemented her post in Bollywood for fast songs specially on Helen and item girls. However in this movie one of the best songs was ” Dilwar ..aa Dilwar…. dil se pyare dilwar… dil ki sunta…” any body who sees this song will think that the song must have been sung by Asha Bhonsle.. but the song was sung by her elder sister Lata Mangeshkar. R D Burman was very intelligent….. he knew the song was based on an Arabian Music where voice needed special control which should be errotic but do not contain any stream . I am sure R D would have thought about Asha first …………but finally settled the song with Lata.. The song was more like an item song picturised on Aruna Irani … however the soundtrack was better than Monica song.