Complex sentence: The song recording began on 16 March 2001 while the shooting was to start in middle of June, and continue through July and August 2001, and it was planned to be released for Diwali.
Split into simpler sentences: The song recording began on March 16,2001 while the shooting was to start in mid June, and continue through July and August 2001. And it was planned to be released for Diwali.