KPN asked Starsound Productions to produce 2 lip dubs for the telecom company. A lip dub is a type of video that combines lip synching and audio dubbing to make a music video. It is made by filming a group of people lip synching while listening to a song or any recorded audio then dubbing over it in post editing with the original audio of the song. A lip dub is often used to promote a company on a playful way or it is organized as a teambuilding activity.

Lip dubbing became populair when British soldiers stationed in Iraq playbacked the song 'Is This The Way to Amarillo?' by Neil Sedaka. Their video was a worldwide hit thanks to the internet. Jake Lodwick, the co-founder of Vimeo, coined the term 'lip dubbing' (SOURCE Wikipedia).