The non­-for­-profit­ run ​Open House Festival​ finished its round of sold out gigs across Northern Ireland at the weekend. The festival, which organises live performances in unique and intimate venues, treated guests to acts such as homegrown talent Stephen Maccartney; Jarrod Dickenson, an upcoming Texan-­born Folk and Roots­ Blues singer; and last but not least, Lindsay Lou & the Flatbellys, a Bluegrass band from Michigan. During the festival, Claire McKeever caught up with Mark and Josh, one half of Lindsay Lou & the Flatbellys, at their penultimate gig at The Arcadia in Portrush. How was Lindsay Lou & the Flatbellys…