Vanessa Olivarez and Elizabeth Elkins, together known as Granville Automatic, team up with fiddle player Cassandra Sotos in January's Guest Room Sessions video. Their performance of "Goodnight House," a song from the duo's most recent album, was filmed in an historic Nashville library.

Olivarez and Elkins first wrote together in 2009, and it didn't take long for Granville Automatic to form from there. The duo has built their career on songs about horses, history and war, so it's fitting that their Guest Room Sessions installment was filmed in the history collections room in the Brentwood Library in Music City.

"The room contains many antiques from early homes in the Nashville area, most of which are from the Civil War years or before. There are also many fascinating papers and documents related to the city," the band tells The Boot. "We felt it was an appropriate place to do this song, which is the story of a house used as a hospital during the Civil War battle of Perryville, Ky."

From the very first fiddle note, viewers will take notice of guest fiddler Sotos' talent. She has played with artists such as Rascal Flatts, Toby Keith, George Jones, Trisha Yearwood and more, and her skills shine when paired with Granville Automatic.

"Cassandra is a great friend who has played with many big country artists. We've always wanted a chance to play with her -- and finally had this opportunity," the band adds. "She's a rock player and loved the chance to play something quiet and haunting."

Granville Automatic's self-titled album dropped in 2012, and their second studio album, An Army Without Music -- a collection of songs inspired by Civil War battles -- was released in 2015. Fans can purchase their music on iTunes.