Wau Wau Sisters - Naked As The Day They Were Born Again, Famous Spiegeltent

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Whale Of A Time, C Nova

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Story's End, Summerhall

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They're outrageous. Or perhaps that should read "[expletive deleted] outrageous." Because the Wau Wau Sisters are no strangers to the f-word, either vocally or, as they candidly reveal, socially. But can we believe everything these two alleged siblings tell us? After all, here they are, wearing not a stitch as the name of their show suggests, having arrived in Edinburgh to find their luggage has been lost in transit. After much audience-bating and frank exposure, their suitcases magically appear, making this a strip show in reverse, and the madness begins in earnest.

To go into detail would spoil the fun for potential attenders but just to give a flavour: country songs are sung while one by now bewigged, cowgirl-outfitted sister is balancing the guitar-strumming other one on her feet and guzzling a bottle of beer, and much mirth, as well as a kind of identity theft, is extracted from the victims they select from the audience.

As ditzy, rude, lewd and libidinous as the Wau Waus (it's pronounced Vow Vow) get - and they are all these things and more - underneath their adopted hayseed, in-bred, kissin' siblings-and-anybody-else personas lie serious acrobatic skills. Their big number, a trapeze act that sees them slithering up and down each other's bodies and limbs, is as impressive a routine as I can remember seeing on the Fringe, and I won't disclose what revolving message the inscriptions on their underwear sends out. Go and see for yourself. Go on. Be brave.

Run ends August 20

The sounds of Korea - the band and the country - flow through Whale of a Time to create an at times magical show that is both exotic and strangely familiar. Korea are a kind of oriental Pentangle, using traditional instruments plus guitar and percussion, including a brilliantly played triangle, to accompany their charming singer, Ashin Kweon. The Beatles' Norwegian Wood receives a vaguely Scottish-Irish-sounding makeover and a Cossack dance-like insistence drives another number.

Other items stay closer to the band's origins, but what stays in the mind especially is the flute playing of Dong-Kun Kim, whose intense soulfulness gives this beguiling music a deeply expressive edge.

Run ends August 17

Story's End brings together film, live music and spoken word in a show that is big on atmosphere and has a certain Withnail & I quality as the writer who will eventually appear before us reading from an electronic tablet seems to be drowning in the paper carrying his discarded words on screen. As a piece it does not quite hang together for me, but the songs have a stoic strength that appeals and the incidental music and arrangements, including sparingly but imaginatively used brass, are genuinely haunting. Part of Made In Scotland 2013.

Run ends August 18