AN Edison recording of the bugle charge sounded that day.
After watching the film I was looking up a few details and stumbled upon this. Maybe someone else might also find it interesting.
Trumpeter Landfrey's Charge of the Light Brigade
Played by: Trumpeter Landfrey
Recording date: August 2, 1890
Location: London, England
Record format: Edison brown wax cylinder (unissued)
NPS object catalog number: EDIS 39848
** Historical note: Landfrey was a bugler in the Light Brigade at the Battle of Balaklava, October 25, 1854, of the Crimean War. On this recording Landfrey plays a trumpet that was used at the Battle of Waterloo, June 18, 1815, of the Napoleonic Wars.
http://archive.org/details/EDIS-SWDPC-01-04