The sophomore album after a smash-hit debut is famously fraught. For every Led Zeppelin II there’s a Fairweather Johnson. (RIP, Hootie!) This is the trap awaiting Passion Pit's Michael Angelakos, the gifted electropop songwriter whose Cambridge, MA, band is back this month with Gossamer, their follow-up to 2009’s Manners. Album #2 is hard, but not futile. Angelakos picks five that got it right.