What is it about the tango that has enabled it to transcend its origins in the late 19th-century slums of Buenos Aires to become one of most popular dances in the world's glittering ballrooms and beloved of gymnasts, figure skaters and synchronized swimmers? How did tango escape the sparkle of the glitter ball and the borders of Argentina to be taken seriously as art music?

It may take two to tango but there's a trio here to tease out the complex, multiple strands of this beguiling dance, as Tom Service is joined by tango historian John Turci-Escobar and Buenos Aires-born tango dancer Carla Dominguez.

David Papp (producer)