 Inspired by the vocal stylings of the Mills Brothers, "Timeless" featured the sisters' three-part harmony vocals and included songs from the Sons of the Pioneers, Bob Wills & The Texas Playboys, Spade Cooley, and Duke Ellington.In 2009 The Quebe Sisters appeared on Episode 26 of The Marty Stuart Show together with The Opry Square Dancers, Connie Smith, Leroy Troy and The Tennessee Mafia Jug Band, and The Fabulous Superlatives.That year, the Quebes met twin sisters Penny and Katy Clark backstage at the Grand Ole Opry.