It’s been forty years since mandolinist and bandleader David Grisman began playing with his Quintet, a band that bended more genres into the bluegrass/acoustic idiom that ever before. His groundbreaking compositions sat nicely with the school of acoustic gypsy-swing first popularized in the United States by guitarist Django Reinhardt and fiddle player Stephane Grappelli. Entirely different than the “newgrass” music from his contemporaries John Hartford and Sam Bush, “Dawg” music was and still is truly a form of its own.