Bill Monroe is one of those rare figures in the history of music credited with inventing a genre. He did that with bluegrass to be sure, but he also trained several generations of bluegrass musicians as well, guaranteeing the continued excellence and development of the genre. Virtually any bluegrass great you can name—Earl Scruggs, Lester Flatt, Reno and Smiley, Vassar Clements, Carter Stanley, and Mac Wiseman—studied at the feet of the master in the Bluegrass Boys. Capturing an incendiary performance by one of Monroe’s late-period bands in 1989, Live From Mountain Stage shows that Monroe never lost a step throughout his long career. Many of Monroe’s absolute classics are played in rousing fashion, including “Mule Skinner Blues,” “Uncle Pen,” “Blue Moon of Kentucky,” and “Roll In My Sweet Baby’s Arms.”