Career
He founded his first orchestra in 1938. Many important composers, instrumentalists and arrangers of the Czechoslovakian jazz scene gradually went through his band. In 1947-1948 Vlach"s orchestra cooperated with the V+West Theatre (former Osvobozené divadlo).
He recorded prolifically with Supraphon and his output includes both light classical and orchestral as well as jazz and popular arrangements for big band with strings.
He also arranged and conducted many Czechoslovakian film scores from 1940 to 1980. Many of these titles are now collectors items.