Original sentence: The final show was recorded on 7 September 1977 but not broadcast until after Marc's funeral (20 September 1977), also attended by David Bowie.They were also joined by dance troupe called Heart Throb
Edited sentence: The final show was recorded on 7 September 1977 but not broadcast until after Marc's funeral [20.9.77], also attended by David Bowie.They were also joined by a hopeless dance troupe called Heart Throb