MUMBAI: Tamil songwriter and composer Ilaiyaraja once said, 'music transcends countries and knows no boundaries'.

Indian singer Sonu Nigam and Pakistani singer Atif Aslam are showcasing something similar in the US. The two are touring together.  

Read more: When Sonu Nigam talks about 'futility of competitiveness'

The singers seem to be bonding well as one can see in the picture above. Sonu is seen on a wheelchair as he is still recovering from his knee surgery.

The singers seem to be enjoying their new found friendship.

Furthermore, Sonu who performed for the first time post his knee surgery received an overwhelming response from the audience. In fact, the singer witnessed waves of flashlights in the audience as he performed on 'Abhi Mujhme Kahin' from 'Agneepath' (2012). It was an extremely emotional moment for Sonu and he battled to hold back tears.

"Sonu has been away from the stage for a while due to the leg surgeries. He really enjoys performing live in front of a packed arena and it’s nothing short of bliss for him. During the Atlanta concert, he was so overwhelmed by the audience's response that he could barely hold back his tears. He thanked the crowd post the concert for being one of the best audiences he's performed in front off over the last two decades," said a source close to Sonu.

Sonu and Atif are slated to perform in New Jersey, LA, Houston, San Jose, Vancoure B.C, Chicago and Austin.