The Grateful Dead became a rock institution by combining tuneful roots music with daring improvisations. Their influence abides in the country blues of Phish's "Possum", in the quicksilver guitar of Meat Puppets' "Lake of Fire" and in tilted campfire songs like Animal Collective's "Winters Love", while Gov't Mule guitarist Warren Haynes channels Jerry Garcia's virtuosic soloing in "Towering Fool".