"I sing (in a film) only when I feel that any enhancement can happen in my performance in the film. I don't consider myself a playback singer," Farhan said on Tuesday on the set of singing reality show 'Indian Idol Junior'.
"For me, singing is one more aspect of enhancing my performance and I approach singing that way only," said Farhan, who was on the set to promote his forthcoming film 'Bhaag Milkha Bhaag'.
Farhan made his singing debut with 2008 musical 'Rock On!!'. He sang five tracks in the movie. Later, in the 2011 film 'Zindagi Na Milegi Dobara', he lent voice to two tracks -'Senorita' and 'Toh Zinda Ho Tum'.
His next acting project, Rakeysh Omprakash Mehra's 'Bhaag Milkha Bhaag', based on the life of former athlete Milkha Singh, releases on July 12.