Janelle Monáe and M.I.A. will use holograms to perform together live at Audi launch
Thursday, April 3, 2014 at 8:00PM 
After 2Pac’s holographic resurrection at Coachella in 2012, we know the definition of live performances have been changed forever. Audi wants to carry on the tradition at the launch of the new A3 on April 3. M.I.A. and Janelle Monáe will be performing a cross-country duet of two new songs with the help of holograms. Monáe will be playing her set in Los Angeles, while M.I.A. will perform in New York. They will close the show together with the two songs.
According to the press release, "The set utilizes 3D projection mapping to add layered depth of field perception with animated graphic content, the result of which will be an electric never-before-seen 3D bi-coastal performance." We’d have to see for ourselves how they’re going to pull this off though.
Source: Spin