Through both work and personal preference I've seen a lot of Bollywood in my time. Combining dance AND a capella singing? Coming from someone who can barely chew gum and walk at the same time, that's just pro.
Aayush and his girlfriend are strolling SF's Pier 39, when a bollywood flashmob happens. He joins in on the punjabi group and then does a number from a bollywood movie, and caps it off with joe cocker's "you are so beautiful"