YouTube Celebrates Its 9th Birthday With a Karaoke Night Featuring Memorable Musical Moments From Its History

“YouTube Birthday Karaoke Night” is a video by YouTube celebrating the video sharing service’s ninth birthday featuring memorable musical moments and performers from its history. Those involved include the likes of The Gregory Brothers, Tay Zonday, Mystery Guitar Man, Madilyn Bailey, and more. YouTube has also created a playlist of the biggest songs that made it into the video.

YouTube has also uploaded a video looking behind the scenes.