Here’s an informative guide on — covering what it is, where to find it legally, and how to set it up on your phone. What is “Annan Thambi”? Annan Thambi (translating to “Elder Brother & Younger Brother”) is a popular Tamil film theme, often referring to movies centered on sibling bonds. The most well-known reference is from the 2017 Tamil film “Annan Thambi” starring K. Bhagyaraj and Mahima Nambiar, with music composed by Vishal Chandrashekhar .