"The Fire Raisers" was written by Max Frisch in German (1958) as "Biedermann und die Brandstifter". Originally a radio play, it was later adapted for television and the stage as a play in six scenes. See https://en.wikipedia.org/wiki/The_Fire_Raisers_(play)
The production for which Peter Tranchell wrote the music was translated into English by Michael Bullock, adapted for television and directed by Ronald Eyre, and starred Alfred Marks, Peter Vaughan, Dudley Foster, and Kathleen Michael. It was first shown on December 11, 1963, and again on the new "BBC One" on 20 June 1964.
The music was scored for 3 male voices and vibraphone.
More information on the programme from the BBC's Genome project: https://genome.ch.bbc.co.uk/a7a0ec4c81a841108d3bd7fd68cbbebf