What started when Michael Angelakos self-recorded a Valentine’s Day EP as a gift for his girlfriend has now evolved into a Boston-based quintet with a thoroughly amazing sophomore album. “Take a Walk” picks up where Passion Pit’s praised 2009 debut, Manners, left off. “I’ll Be Alright” finds them at their most experimental, with hyper-edited cut-up arrangements tangling up and then unravelling to reveal an uplifting electro-pop standout.