Seeing Krystle Warren perform for the first time is a striking experience. First, there is the utter improbability of it all: she shuffles onstage with little more than a low- key hello, and proceeds to sing with an effortless power that completely belies her tiny frame. Hearing her fill a crowded club without using a microphone… that’s a Voice. And then there are her vocal stylings, which feature a melisma as rich as that of Wonder or Hathaway, but put all of that technique at the service of music that has never heard such a thing—folk and country, songs influenced by everyone from Nick Drake to Joni Mitchell to Willie Nelson. But when you’ve gotten past the incongruities, you quickly begin enjoying her for what she is—a wholly original singer-songwriter-poet in an age of few.