When you own your own phone booth, well, you just have to cover a hit called 'Payphone.'
"We heard 'Payphone' not too long after it came out and we l-o-v-e-d the groove. And, we love Maroon 5," Kelly says.
"Plus, we already owned a mini-phone booth."
The only twist? "Adding banjo was completely unexpected. We really loved the color it added to the song."
The sister act, joined on its organic take of "Payphone" by bandmates James Adams and Jaydon Bean, also incorporated a piece of its original composition "Slow Down," a single from its second album, 2010's "Rewriting Chapter 2."
In 2008, Karmina climbed to No. 24 on Billboard's Adult Contemporary chart with its anthemic single "The Kiss," from its debut album, "Backwards Into Beauty." Last year, the twosome became the first act to partner with Apple on a tour of European Apple Stores that included performances in London, Glasgow and Paris.
Earlier this year, the duo covered another smash, Gotye's "Somebody That I Used to Know" - currently atop the Hot 100 for an eighth week - with the band Right the Stars. Gotye himself Tweeted his approval of the version, which mixes in a portion of the Police's 1983 hit "King of Pain."
"Right The Stars' cover is super slick!," Gotye wrote. "Clever reference to the parallels with King of Pain's chord progression."