The Pakistani teens who became disco superstars

In the 1980s, a brother and sister from Pakistan topped the charts in countries all over the world with their dancefloor filler, Disco Deewane. Nazia and Zoheb Hassan were the first teenagers ever to make a hit record in India. Zoheb tells Vicky Farncombe about their rise to fame. (Photo: Nazia and Zoheb Hassan. Credit: BBC)