Harrison 's workload ensured that he was rushing to finish '' Dark Horse '' in October 1974 before beginning his North American tour with Shankar on 2 November . Described by Leng as " growled " , Harrison 's rough-sounding singing on " Ding Dong " shows the effects of a long-standing throat problem . Due to a combination of overexertion and abuse , this condition worsened , leading to him contracting laryngitis as he simultaneously completed his vocals for the album in Los Angeles and rehearsed for the tour . The female backing singers on the track remain uncredited
North American tour with Shankar
George Harrison and Ravi Shankar's 1974 North American tour
Ding Dong, Ding Dong