From the French Broadcasting Transcription Department, a live concert and the world premiere of the Symphony Number 1 by Henri Dutilleux as it was presented by the French National Orchestra, conducted by French music icon Roger Desormiere on June 7, 1951.

I'm not sure if this has been reissued as a historic and notable recording in French Music of the 20th century. If not, that's a shame as this was a major work by an important composer of the second half of the Twentieth Century.

Regardless, you get to hear it now anyway.