Billionaire Perelman Criticizes Transparency at Carnegie Hall.

Discord has enveloped the board of New York's Carnegie Hall after billionaire Ronald O. Perelman accused its executive and artistic director of failing to be transparent about the concert hall's financial operations. Perelman's letter mentions the Warner Prize, an award established with support from the Blavatnik Family Foundation, an arts endowment headed by Carnegie trustee Len Blavatnik. [Extracted from the article]