Simon Shelton Barnes, best known as the actor who played Tinky Winky in Teletubbies, has passed away at the age of 52.

Barnes, who replaced original Tinky Winky actor Dave Thompson in 1997, played the role of the bright purple Teletubby from 1998 until 2001, and was formally trained as a ballet dancer and choreographer before taking on the role. The Teletubbies were a huge sensation when they first arrived on the scene in 1997, and even scored a chart-topping hit that year.

Here's that single everyone knows, whether they'll admit to it or not.