Reclining on his couch in a beautifully appointed living area at his New Jersey home, Frankie Negron strikes you as a pretty relaxed guy. As he recounts his accomplishments, it would be understandable for Negron to now finally sit back on this sunny afternoon and coast a little: child performer and student at the School of Performing Arts, Broadway showman by age 20 and, most famously, salsa superstar, earning him Grammy Award nominations, Billboard