Premji Amaren; born Ganesh Gangai Amaren on February 3, 1979) is a Tamil playback singer, film composer, songwriter and actor. Son of veteran film composer and singer Gangai Amaran, he often composes rap songs in Tamil cinema and is known for his comical performances in the Venkat Prabhu films Chennai 600028, Saroja and Goa. His stage name, Premji, is actually a spelling error, as it is meant to be "Prem G.", (the G referring to his father's name).
Primarily interested in composing music, Premji started his career as an assistant to film music composer and his cousin Yuvan Shankar Raja, turning a playback singer, singing mostly the rap portions in Yuvan Shankar Raja's compositions, before working with other music composers as well. In 2006, however, he made his acting debut in Silambarasan's Vallavan as the heroine's friend, following which he starred in his brother, Venkat Prabhu's directorial debut Chennai 600028 (2007), in which he played the role of Seenu. The movie went on to become the year's biggest summer blockbuster, establishing Premji as a comedy actor.
In 2008 he became an independent music director with Agathiyan's Nenjathai Killathe and for Thozha, in which he essayed one of the leading roles as well. But it was Saroja which fetched him accolades for his performance as Ganesh Kumar.
He appeared as a lead character in Venkat Prabhu's Goa (2010). He is also working as music composer on Pookada Ravi, starring Narain. He will also be composing music for the movie Pookaran which stars R.Madhavan.  Family
Premji is the son of veteran director & musician Gangai Amaran and the younger brother of film director and actor Venkat Prabhu. Film composer Ilaiyaraaja is his uncle while Yuvan Shankar Raja, Karthik Raja and Bhavadharini are his cousins.