Sister Sledge on why disco lives on

For more than 40 years Debbie and Joni Sledge have been performing together, with hits like We Are Family and Lost in Music making their name.

But Sister Sledge have been singing together for even longer than that, growing up in a musical family from a musical neighbourhood.

Now, they're back with a performance at the 80s Rewind Music festival next month, and a tour later in the year.