Entrepreneurialism has become a byword among classical musicians lately, but few have mastered the art of founding a business upon creativity as deftly as the composer Paola Prestini. Ms. Prestini, 40, started VisionIntoArt, her multimedia production company, when she was still a student at the Juilliard School, in 1999. She expanded into recordings, with her VIA Records imprint, in 2014, and this past fall VIA opened National Sawdust, a large Brooklyn, N.Y., performance space that promises to be a laboratory and...
