The Winterjazzfest held at three venues in Greenwich Village last Saturday, a smorgasbord of almost two dozen acts offered up to attendees of the Association of Performing Arts Centers conference, gave a hint of some sounds to be heard around the U.S. in the months to come. What I witnessed was diverse, engaging, virtuosic but not didactic. The musicians seem to know they’ve got to be audience-friendly, or go without. So they’ve tailored their acts for clarity, balancing familiarity and novelty but not dumbing down.Â