This is the tech Intel used to turn Lady Gaga into David Bowie for the Grammys

When David Bowie died in January, there was an outpouring of grief for the artist who made innovation in performance mainstream. To pay tribute to Bowie, Lady Gaga teamed up with tech company Intel to produce a show which used holography, robotics, 3-D motion graphics, and live video processing.

She performed nine Bowie songs in six minutes at the Grammys: "Space Oddity," "Changes," "Ziggy Stardust," "Suffragette City," "Rebel Rebel," "Fashion," "Fame," "Let's Dance" and "Heroes." The act was widely regarded as a big success and the visual spectacle was incredible.

Intel's advert which aired immediately around the performance on CBS gave a rare view behind the scenes of the run up to the Grammys show. There was some criticism on Twitter that Intel aired its commercial immediately after the tribute, but without it viewers would know less about how the remarkable performance was put together.

Here's a rundown of the technologies Intel used: