T-Mobile has launched a new flashmob advertising campaign, this time planting 300 performers in Terminal 5 at Heathrow International Airport. Singers, accompanied by a ‘vocal orchestra’, peformed “At Last” by Etta James, “Comin’ Home Baby” by Mel Torme, “Return of the Mack” by Mark Morrison, “I am the Passenger” by Iggy Pop and “I Knew You Were Waiting (for me)” by George Michael & Aretha Franklin. The ‘Welcome Back’ stunt was filmed by 18 different hidden cameras, capturing the real reactions of people witnessing the event.