Both with their own catalog of chart-topping, genre-defying music, Trampled by Turtles and Caamp are known for pushing the boundaries of mainstream bluegrass and folk. Their emotion-evoking lyrics, genre-defying sound and undeniable talent are featured on songs like Trampled by Turtles’ “Wait So Long” and “Wildflowers” and Caamp’s “Vagabond” and “All the Debts I Owe.” Hear these and more when the groups team up to headline the Treasure Island Amphitheater on Saturday, September 16.