I stumbled upon these enormously talented gents in Central Park almost a year ago!  Their music was incredible, and they drew a hypnotized audience in from all sides.  One of my favorite things about NYC is that you can just happen to stumble across serious musicianship while taking a stroll through the park!  If you want to check them out, the link to their Facebook page is: https://www.facebook.com/eliandtitus.