Complex sentence: Although Parveen is an highly acclaimed singer she has never rendered her voice to films but her pre-recorded songs have been used however now she has agreed to lend her voice to films on insistence of her fans and Farooq Mengal.
Split into simpler sentences: Although Parveen is an highly acclaimed singer, she has never rendered her voice to films. Now she has agreed to lend her voice to films on insistence of her fans and Farooq Mengal.