Actor Varun Dhawan has taken a break from the shooting schedule of "Sui Dhaaga" to launch a song from his upcoming film "October" in New Delhi. Varun, who is in the national capital to shoot "Sui Dhaaga", has taken some time out of his current shooting schedule to launch "Tab Bhi Tu". The song highlights the complexity of the relationship between the leads essayed by Varun and Banita Sandhu. It presents a track that depicts the heart ache that comes with true love. The song has been sung by Pakistani singer Rahat Fateh Ali Khan, read a statement.