The dulcet harmonies of Sweden's First Aid Kit come to London when the duo headlines South Facing Festival in August. 

Sisters Klara and Johanna Söderberg will perform their folky pop-Americana melodies at the open-air Crystal Palace Bowl on Saturday August 12.

Klara and Johanna have accrued more than one billion streams and are two-time BRIT Award-nominees. 

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Their 2010 debut The Big Black and The Blue won the sisters critical acclaim, My Silver Lining, from their 2014 album Stay Gold was streamed hundreds of millions times over achieving Golf certification in the UK, and the pair have collaborated with a broad range of artists, from Jenny Lewis and jack White to George Ezra, Zara Larsson and Conor Oberst.

Last in town December last year, the duo sold out two Eventim Palace gigs, because they're that good. 

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This time round, the sisters will be joined by Irish singer-songwriter CMAT, folk band Flyte and former Maccabees Felix and Hugo White who now perform as 86TVs with their other brother Will. 

First Aid Kit join the likes of Craig David and Noel Gallagher's High-Flying Birds, who headline other dates throughout the four-day festival, alongside Rudimental and Nathan Dawe. 

Tickets to see First Aid Kit at South Facing Festival tickets go on sale tomorrow, Friday, February 10 at 9am at southfacingfestival.com