It was a challenge to sing qawwali song: Adnan

Pakistani singer Adnan Sami, who has crooned superstar Salman Khan's favourite song from his upcoming film "Bajrangi Bhaijaan", says the qawwali track was a challenge for him. Salman and director Kabir Khan found Adnan apt for "Bhardo Jholi" and the 41-year-old singer-composer cannot be more grateful to them. "It was a challenge to sing this song. But it was a great experience. I have heard lot of qawwalis but I hate imitating. It was a different experience but I enjoyed it," Adnan told reporters here at a film's promotional event of the film. "I have friendship.. relationship with them. I have done this out of love. I am grateful to Salman and Kabir," the singer said.