Imtiaz, Irshad's contribution immense in my career: Ranbir

"Poetry is something you need to understand. You can read it but there are many deep meanings behind the words written in it. Working with Imtiaz and especially on 'Tamasha', which has a lot to do with story-telling and poetry, I've got to understand it. I've spent a lot time with Irshad and A R Rahman in the recordings," he said.