The Vaccines like to work quickly. The group recorded its debut album less than a year after forming, and filled it with short bursts of exhilarating garage-pop. The music has a simple formula, and the execution is pretty straightforward, but don’t be mistaken: The Vaccines aren’t working in the spirit of the old punk bands that used to empower those around them by creating music that seemingly anyone could make. This London quartet’s less-is-more approach wouldn’t sound nearly as impressive in lesser hands. It’s the product of surprisingly thoughtful songwriting, a refined sense of knowing that sometimes the finest pop songs don’t need all of their allotted three minutes, and a frontman with an engaging, versatile voice that works well whether he’s feeling moody, vulnerable, or aggressive.