"It's about finding the right words to say," explains Claire.
Missing You came in the aftermath of Glasgow's 2013 Clutha Tragedy when a police helicopter crashed into a city pub.
"We were discussing how hard it would be to have the last voicemail message from someone you had lost and would that be a comfort or a means to continue the misery," Claire says.
Shut The Front Door is a powerful guitar-driven anthem.
"This is a real departure for us, it is pretty full on and rocky," Paul says. "It is basically saying – 'you don't like us and we are cool with that. There's the door!'"
The recently married couple fuse their passion for country music with eclectic musical influences to continue the tradition of exciting new music to emerge from Glasgow, following the likes of Admiral Fallow, Chvrches and Honeyblood.
The duo's debut album, Hope In Troubled Times, was released in 2010 and was met with huge acclaim from critics and fans alike.
They are the only band to have performed at all three Country 2 Country festivals at London's O2 – this year they played to a capacity crowd at the Brooklyn Bowl, the largest of the 'pop-up' venues.
They also performed a live acoustic session for BBC Radio 2 Country, hosted by Jo Whiley, Bob Harris and Baylen Leonard. This summer also saw Raintown play the main stage at the Cornbury Music Festival, alongside the likes of Tom Jones and Lulu, and perform at The Country Collective at Canary Wharf with Ward Thomas and Callaghan.