The Regattabar tends to feature a regular touring cast of jazz heavyweights but every once in a while it’s time to showcase an up-and-coming national talent like Claudia Acuña, a Chilean-born jazz vocalist who makes her Regattabar début tonight. Acuña is based in New York City, where she’s been working her way up the ladder in the competitive local scene. She got her first break on bassist Avishai Cohen’s 1999 album ‘Devotion’, which brought her to the attention of critics and fans alike, before signing to the seminal Verve.