It's no secret that flash mob performances been somewhat taken over by corporations in recent years. But that doesn’t stop viewers from enjoying the results, whether in person or on the web.
Take this charming example orchestrated by the Italian regional airline Air Dolimiti and featuring singers from the Verona Opera. What's perhaps most impressive is that Alfredo and Violetta's duet unfolds in a small regional jet. Skip ahead to about :18 for the performance.
Update: It seems that another opera troupe recently had a similar idea. A group called Secret Artists Chile performed Verdi's "Brindisi" on Santiago Sky Airline. Watch that performance.