Muck's reputation rests largely on his recorded legacy. In October 1917 he made a series of sound recordings in the US with the Boston Symphony Orchestra for the Victor Talking Machine Company in their Camden, New Jersey auditorium. Unusually for the time (when the pre-electric purely mechanical “acoustic” process was in use) the orchestra seems to have been recorded at full strength as the 1919 Victor catalogue refers to "approximately a hundred men". Eight short pieces spread over ten 78 r.p.m. sides were selected, including excerpts from Beethoven’s Symphony No. 7, Tchaikovsky’s Symphony No. 4 and two items from Berlioz’s "Damnation of Faust."