[Pianists] [Hofmann, Josef. (1876–1957)] Chasins, Abram. (1903–1987) "I've explained and re-explained, and yelled and cajoled and demonstrated..." - Typed Letter SignedTLS from the composer, author, educator, and radio executive replying to correspondence from one Roger Derby. January 21, 1958. 1 pp., on WQXR FM stationary. Chasins begins the letter by responding to a suggestion of a future book topic from Mr. Derby, seemingly to do with piano technique and possibly on how best to perform his own work. "Even with marvelously endowed pianists such as Kapell or Bolet or Keene, I've explained and re explained, and