Actor Kartik Aaryan made a surprise appearance at Diljit Dosanjh's concert in Gujarat's Gandhinagar on Sunday. A video of Diljit welcoming Kartik on stage and calling him his "brother" has gone viral on social media. The duo performed the title track of 'Bhool Bhulaiyaa 3', which was originally sung by Diljit, Pitbull and Neeraj Shridhar.