In an interview posted at an online blogspot, Gorelik comments on the unmistakable resemblance between the painting and photographs of Sing-Lee in 1952.
But biographer Boris Gorelik, for this forthcoming book "Incredible Tretchikoff, " came from Russia to South Africa in search of the inspiration for the painting, and in 2010 discovered Monika Sing-Lee in Cape Town.
Based on Brooks' 1968 movie of the same name, The Producers - about the worst musical ever written - had required Dreyfuss to sing and dance with co-star Lee Evans and at one point do both with a chorus line.