Though the audience was sparse, this is a tough area to fill an auditorium for an evening of jazz, those in attendance were lucky enough to hear one of the finest jazz vocalist singing today. Since her debut album of 2005, Gretchen Parlato, she has taken the world wide jazz scene by storm. Sultry, wispy, but never weak, her audience leans forward as if listening to a secret whispered only to them. Always inventive, she uses her voice like an instrument, improvising and holding musical conversations with her trio. What a trio it is with Taylor Eigsti on piano, Kendrick Scott on drums and Harish Raghavan on bass, these cats are great musicians in their own rights and in perfect balance with Ms. Parlato. The hundred or so fans at The American Theater were treated to more than an evening of new interpretation, they were introduced to the new standards.