A Tribute to Horowitz: Lola Astanova, Piano Benefit for the American Cancer Society A note in the program indicates that Ms. Astanova used a Steinway piano (CD 503) once owned by Vladimir Horowitz. The instrument was tuned for this performance by Steinway technician Franz Mohr, who had maintained the instrument through the years for Horowitz. solo recital benefit performance tribute 2012-01-19T20:00:00