The lead singer of Aerosmith shocked crowds in Moscow in 2015 when he abruptly started playing alongside a busker with an acoustic guitar. I Don't Want to Miss a Thing, a band's 1998 power ballad, was sung by the two. As a small crowd that had gathered applauded, Tyler offered the man a high five after they were finished.
In 2013, the singer surprised the crowd at a NYC subway station with a performance with the band Naturally 7. "Who's Lovin' You" by The Jackson 5 was performed.
Madonna
The pop icon and her son David performed on the streets of Paris in December 2015 as a spontaneous tribute to the victims of the city's terrorist attacks on November 13, including a cover of John Lennon's "Imagine."
