For decades Bill Monroe was a first generation mandolin player, while Sam Bush and David Grisman were young upstarts. Today Bill is gone and, believe it or not, it is Sam and “the Dawg” who have the 40-year-plus history. Their new album together is more than a collection of mandolin duets, however. Also featured are the octave mandolin, slide mandolin, Jack Lawerence on guitar, and the legendary drummer Hal Baine. Included are fiddle tunes, blues, swing, and a touching improvisational tribute to John Hartford called Hartford’s Real. The album’s title, Hold on, We’re Strummin’, is a play on an Issac Hayes tune that Sam tears up, Hold on, I’m Coming. Can you name the hidden track?