Despite Sherlock co-creator Mark Gatiss recently revealing that he doesn't expect a fifth series to happen any time soon, composers of the show David Arnold and Michael Price will be bringing the show's score to a live audience.
Speaking at the BFI & Radio Times Television Festival, composer David Arnold said: "I think it'll be a good night out, to be honest.
"What's lovely about doing it live is that it kind of comes back to you because it's just you, the music and the audience.
"Ten million people watch it on a Sunday night and we're sitting there with a cup of tea, packet of biscuits, and have no experience of what anyone thinks of it."
Following the 2015 Sherlock prom, the new programme will be played by a live orchestra and updated to include music from the recent fourth series.
It comes after Gatiss said that if Benedict Cumberbatch and Martin Freeman do ever free up time for more of the BBC detective drama, he and co-writer Steven Moffat already have a few story ideas.
"Mark's always wanted to do 'The Red-Headed League' [and] there's 'The Engineer's Thumb', which is a slightly mad story that doesn't have a proper ending," Moffat recently revealed.
"There's an element of 'The Greek Interpreter' that I think is really exciting, which hasn't been done, because in our version of events Irene Adler is still out there. There's always that.
"Now we know she and Sherlock actually still text each other. What would happen if they ever met again? There are those things we can do, but we simply have no idea whether we'll be doing them or not."
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