$25 tickets http://www.rockwellsusa.net/music.php reservations (914) 738-5881 From her Flamenco-tinged debut, Listen Love (2004), to her fourth album, Beyond the Blue, Anglo-Trinidadian vocalist Tessa Souter has a penchant for exploring strikingly beautiful music mostly untouched by other vocalists: something from The Beatles, Sting or Cream. She’ll add an overlooked Standard or …