Gandharv Sachdev of Fukrey Returns tells tales of songs with Raftaar, which tune is probably the most superhit?

Singer Gandharv Sachdev of Fukrey Returns tells which unsune tune with Raftaar, which tune turned probably the most tremendous hit? What’s the factor about Rakul Preet Singh that Gandharva likes probably the most? How was the tune Tu Mera Bhai Nahi Hai from Fukrey composed? All in our unique dialog with Gandharva. Supply hyperlink