András Schiff makes a virtual return to Boston, with music and politics front of mind By David Weininger Globe Correspondent,Updated February 18, 2021, 9:00 a.m. Email to a Friend András SchiffNadia F Romanini On Jan. 7, András Schiff sat alone on the stage of Londonâs Wigmore Hall, playing to an empty venue and a virtual audience he could not see. If he was fazed by the empty seats in the hall, he did not show it. Schiff is a musician whose refinement at the instrument is matched by the eloquence of his musical commentary, and he spoke about each work in the all-Bach recital casually yet with insights deriving from decades of study and performance.