Light-Painted Piano Player

This light-painted piano performance mashup set against the San Diego skyline was created by Ryan Cashman:

Light-Paint Piano Player from Ryan Cashman on Vimeo.

How Ryan did it:

To answer a few questions, I wrote the music and recorded it first. The frames were photographed with a Canon Rebel using 20-30 second exposure time. I used a small green LED keychain light to draw each frame. Once all the positions were photographed they were strung together and synchronized to the music in After Effects.