[20] He also wrote the music for an MGM children's story-telling LP record (CH-103), The Wonderful World of Fairy Tales.
He played the organ while Robert Q. Lewis told The Ugly Duckling, The Pied Piper of Hamelin, The Sleeping Beauty, The Steadfast Tin Soldier, Jack and the Beanstalk, Rapunzel, Beauty and the Beast, Rumpelstiltskin, Pinocchio, Thumbelina, The Little Mermaid, and The Wizard of Oz stories.
[21] Between 1945 and 1949, Sylvern worked alongside his second wife, Jeanne Harrison—she as director, he as musical director—on a number of radio programs,[22][23][24] most notably Adventures of Boston Blackie.
[27] In June 1950, Sylvern was named "outstanding musical director of radio and TV for 1949-50" by Song Hits Magazine.
[37][38][39][40] On July 4, 1964, Sylvern died of undisclosed causes at his home in the Turtle Bay neighborhood of Manhattan.