"We've been working on [De Gabay] over the last year in Butetown with the whole community" says National Theatre Wales Artistic Director John McGrath.
"A group of young Somali men came to us asking if we could help them tell their story in a very different way to the way it's usually told".
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Gareth Bale urged Wales to continue "riding the wave" after clinching their spot in the last eight of Euro 2016.
Wales have qualified for the Euro 2016 quarter finals after beating Northern Ireland 1-0 in Paris.
A rally has been held in Cardiff following the EU referendum to show support to migrant communities.