“The classic Appalachian string-band format (banjo, mandolin, fiddle, acoustic bass, acoustic guitar and/or dobro) is usually associated with bluegrass and old-time country, but it can do a lot more. It has been used in jazz, rockabilly and modern country and more recently by such groups as Punch Brothers, King Wilkie and Cadillac Sky for the surprising purpose of making art-rock. And Cadillac Sky's new album, "Letters in the Deep," is the greatest achievement yet of this unlikely trend.”
– Geoffrey Himes, The Washington Post