The Symphony's recorded history begins in 1925, as the eminent German  maestro Alfred Hertz (1872–1942) brought his orchestra into the  recording studio for its first sessions. Hertz's 24 recordings with the  San Francisco Symphony have been treasured collector's items for  generations, until recently all but inaccessible. This episode brings  the sound of the 1920s San Francisco Symphony back to life for modern  listeners.