Sometime in October, British commuters at a busy mainline railway station will be suddenly confronted by a 65-piece orchestra, soloists and chorus from the Royal Opera House when the BBC stages a surprise "flash mob" opera.
"We are trying to keep the date secret," BBC Three Controller Stuart Murphy told the London Times on Wednesday.
The location will also be kept secret until the day of the performance.
"We are hoping to baffle commuters when the orchestra strikes up in the middle of the concourse," Murphy told the London Daily Express. "Commuting is usually glum, and this will lend a bit of fun to people's journeys."