I used to belong to a small and ever-shrinking group of casual Passion Pit fans who think that while their music has merit and hooks galore, there is something about singer Michael Angelakos’ voice that is untenable. The Beach Boys are the go-to reference for any band that employs a significant amount of male falsetto, and theirs was an effortless compliment to, and focal point of, that dreamy pop. But Angelakos, on the other hand, sings in a Pterodactyl shriek of a falsetto that was initially so distracting to me that I wrote the band off completely. But last night at Blackcat, I changed my mind. Wrapped in the booming bass and twinkling keys of his band-mates, Angelakos’ voice was less shrill and, dare I say, an integral part of a really fun show. I would now simply say, “I’m a fan.”