1645 Bentsen Palm Dr, Palmview. Donation. (956) 585-0703. With a style all their own, Mountain Highway® is an authentic young family band steeped in traditional bluegrass and gospel music originally made famous by icons like Bill Monroe, Flatt & Scruggs, and Ralph Stanley. The band is comprised of four sibling singers who play banjo, fiddle, mandolin, and guitar, with their father playing upright bass. The group is often heralded for its tight family harmony.