A 'live' recording of my Macs singing happy birthday to celebrate the centenary of the London Science Museum, with my PowerBook G4 singing as Vicki and my new MacBook Pro singing as Alex. You can see a video of this, including setup and out-of-sync practice run, at http://www.youtube.com/watch?v=5Aw2kg2D06c
This was inspired by a video of three robots singing happy birthday for the London Science Museum's centenary, which you can see at http://www.youtube.com/watch?v=D8_-McoAriI