Presenting "Agar Tum Saath Ho" lyrical Song from bollywood movie Tamasha starring Ranbir Kapoor & Deepika Padukone in lead roles . <br /> <br />SONG: AGAR TUM SAATH HO <br />SINGER: ALKA YAGNIK, ARIJIT SINGH <br />MUSIC: A.R. RAHMAN <br />LYRICS: IRSHAD KAMIL
