McKay and Stout are ex-lovers, and after 15 years of performing together, they have the kind of on-stage chemistry that goes well beyond anything you could produce in a scientific lab. They complete each other's songs like an elderly couple ends one other's words. There is no denying that these two musicians are in love with each other's music, and it shows. They met while working on Taylor Swift's Red album. McKay was hired as a background singer, but when Swift saw her perform with Stout she asked them to join her band as full members. It wasn't long before the pair were singing on tour and at Swift's concerts, and they even had their own podcast called Pod Club. In 2012, they released their debut EP called The Road Home, which included three songs they had performed with Swift. These tracks showed off McKay's vocal talent and also gave us our first glimpse of Stout's guitar skills. Since then, they have released two more albums: 2014's Let's Dance... If You Want To (which contains hit singles "We Have All the Time in the World" and "I'm Just a Girl Who Can't Say No") and this year's Drinking From the Sunlight River.