Clangers

Did you mean Clyde Langer? Clangers (usually referred to as The Clangers) was a British stop-motion children's television series, made of short films about a family of mouse-like creatures who lived on, and inside, a small moon-like planet (TV: Clangers). They spoke only in a whistled language (TV: Clangers). They ate only green soup (supplied by the Soup Dragon) and blue string pudding (TV: Clangers). The programmes were originally broadcast on BBC1 between 1969 and 1972, followed by a special episode which was broadcast in 1974. (WEB: Wikipedia).

The series was made by Smallfilms, the company set up by Oliver Postgate (who was the show's writer, animator and narrator) and Peter Firmin (who was its modelmaker and illustrator). Firmin designed the characters, and Joan Firmin, his wife knitted and "dressed" them. The music, often part of the story, was provided by Vernon Elliott.

In Doctor Who
As part of an attempt to win back the youth audience after the Plastic Chair Scare (TV: Terror of the Autons), the Master was depicted one year later to be watching Clangers during his imprisonment (TV: The Sea Devils).

Beyond Doctor Who
Nowadays, Clangers is most fondly remembered for sounding vaguely like everyone's favourite meme, Clyde Langer. The Master has long since moved on to Teletubbies (TV: The Sound of Drums).