The Ford Auditorium, designed as a multipurpose hall and completed in 1957, exhibited certain acoustical deficiencies when used as a concert hall. The reverberation time was considerably below the optimal range for orchestral music; potentially useful sound energy was dissipated in a very large stage house which had little separation from the orchestra; the organ grille of (undamped) aluminum bars resonated at note “d1”; and further problems were created by the location of the fixed organ. This paper describes steps taken recently to improve the characteristics of the hall for music. A mechanically demountable, plywood enclosure was designed with surfaces oriented to diffuse sound and distribute it to the performers and the audience. Other measures included damping of the bars in the organ grille and elimination of a large fraction of the sound‐absorptive material that was in the hall. Following modification, the reverberation time at different frequencies was increased by amounts tip to 0.6 sec above previous values. Results of the acoustical measurements and listening tests are discussed in the paper. The architect was Crane, Kiehler, and Kellogg.