““If You Need To, Keep Time on Me” is the quietest taste from Fleet Foxes’ comeback album Crack-Up. Centered on Robin Pecknold’s crisp vocals and acoustic guitar, it’s a patient ballad, with Pecknold’s lyrics compacted into stark, lingering couplets, tying each word together like one mournful exhale. After the abrupt stops-and-starts of “Third of May,” the movement here is notably subtle: a gentle ”