Young the Giant write the sort of soaring, melodic rock 'n' roll that's bound for greatness. From the jolting percussion and anthemic chorus of "My Body" to the lovesick fervor of "Cough Syrup" to the uptempo, sun-stained pop of "I Got," the California five-piece's stunning debut features an arresting collection of songs that announce the presence of a vital new band. "Islands" marries off-kilter jazz rhythms with vocalist Sameer Gadhia's haunting falsetto to create an unnerving effect; the electric slide guitar that punctuates "Street Walker"...