Side-splittingly-relatable, food-for-thought quartet “Grack Mack and the Pack” have served as a widely appreciated emotional lay-by since their 2022, Bristol-based formation into Indie-Folk/Pop. As if “Phoebe Bridgers” delivered “The Beatles” the emphatic pulse of “Big Thief” in the shape of a terrarium and in doing so dotted the lines between summer and spring with a googly-eyed daisy chain and hazy, clean glass.