Pandemic gives pianist Janice Weber time to finish her eighth novel Keith Powers / Correspondent Perhaps you started a novel. Maybe you began studying some new music, like that Scriabin or Prokofiev you’ve always intended to learn. Maybe you’re a presenter and a musician, and had to navigate the new Zoom-concert world to keep things together. The pandemic has done this to most performers. For Janice Weber, it’s what she’s always done. Weber is a prolific author — her latest novel recently finished, and circulating for a publisher. She’s an accomplished pianist — for decades a mainstay of the Boston Conservatory faculty, and a respected soloist throughout the world.