On disc two, go to the [Activities] section. Go to the find the [Golden Ticket Game]. Complete the game and you will be treated to an animatic of Oompa-Loompas's first dance and song, when Augustus Gallop is stuck in the fudge tube.
Go to the [Features] section. Highlight [Main Menu]. Press [Down], you will see a giant W appear. Press [Enter] and you will be able to view another animatic of the Mike Tee Vee song, with the Lead Oompa-Loompas doing a music video type song.