Working with Lagaan Producer Ashutosh Govariker, famous musician A.R Rahman thought in starting that upcoming film of Ashutosh 'Mohenjo Daro' is a documentary and it will be boring. During Promotion of Mohenjo Daro Yesterday, Rahman told, 'When Ashutosh told me about 'Mohenjo Daro, then I thought it will be a Historical documentary and it will be boring.' When Govariker told about 'Mohenjo Daro' to Rahman, then Rahman got to know the subject of the film and he was shocked. He said said, 'I tried to go there and used my imagination.' Then Govariker wanted to know that how he managed to keep diverse cultures blended, considering his music for Hollywood films, Indian films. On this Rahman said, 'We all have same emotion, Love, Sad, Anger, Romance and dreams. so I tap on to that universal factor of an emotion. First I've tried to make it better. Rahman also sung song of the film 'Tu Hai'.