Listen to Part 21 online. Part 21 is an English language song and is sung by Basil Rathbone and Nigel Bruce. Part 21, from the album The Hound Of The Baskervilles & The Adventures Of Sherlock Holmes (Original 1939 Film Soundtrack), was released in the year 2011. The duration of the song is 4:09. Download English songs online from JioSaavn.