Taking a leaf out of Tom Hanks' book in Big, it's David Allain's video for Frankmusik. Of course the budget didn't quite stretch to a giant piano that lights up as you step across it - that'll be a bargain $250,000 of your loose change, according to producer Paul Carter.

It took Paul a while to figure it out - but his dad came to the rescue. "With less than a week's prep, I made a phone call to my dad and he came up with the winning idea," he explains. "We cut each key individually and used plunger microswitches underneath the front edge divided by padded strips to allow give.

"But the spotlights we had originally planned to use were too hot and would've melted the piano. Only when our gaffer Nathan came on board did he make the decision to use simple garden floodlights. These were suitable enough to rig two underneath each piano key.

"It is now a fully working entity, and so much fun that Universal Music have decided to rig it up in their own foyer!"

Watch 'Frankmusik's Three Little Words by David Allain' here