Vocalist Sara Serpa’s career track is a road less traveled in today’s jazz world. Many singers are beholden to the past, choosing to express themselves through the standards of yesteryear, while trying to recreate the sound of the great crooners, whether it be Sinatra, Holiday, or Fitzgerald. Serpa, originally from Lisbon, Portugal, not only does not limit herself to old material, but has an approach closer to that of an instrumentalist instead of a…