For the last four years, two Biddeford residents, Gil and Coco Corral, have been working hard to put their City on the map as a destination for underground songwriters from around the country. The Corrals began organizing shows in the area by hosting monthly concerts in the big barn at their home, a former swinery in Biddeford that quickly became known to the local arts community as “Hog Farm Studios.” This summer, the Corrals established a permanent home for their concert series, converting an abandoned space in the back of a building on Main Street into the “Hog Farm Studios Annex.”