100 pianists playing 50 pianos in concert

At least one hopes "in concert," because otherwise it would be quite a cacophony.

"Lang lang Inspires" at the Royal Festival Hall in London culminates in a massed piano concert, with Chinese pianist Lang Lang performing alongside 100 young British pianists on 50 Steinway grand pianos.

I looked for a YouTube video this morning and didn't find one.

Addednum:  Anon found the video here.

Photo credit: Eddie Mulholland.