 For The song "Gee, I Wish I Was Back In The Army" there is a small  section which says "Jolson, Hope And Benny all for free" This is a  reference to three wartime entertainers; Al Jolson, Bob Hope and  Jack Benny. The original words were "Crosby, Hope and Jolson all for  free", with Bing Crosby in the film it would seem rather weird and  it would most likely break the mood.