Great Performances: The Magic of Horowitz, premiering Friday, January 22 at 10 p.m. on PBS (check local listings), delves into the story behind Horowitz’ virtuoso 1986 Moscow concert. The documentary weaves together concert footage, including intimate close-ups of Horowitz’ agile hands interspersed with the emotional audience reactions, historical context and original interviews with Horowitz’ former manager Peter Gelb (Metropolitan Opera) as well as composer Tatjana Komarova, violoncellist Alina Kudelevic and contemporary piano virtuosos Martha Argerich, Daniil Trifonov and Sophie Pacini.