This is dedictated to all children over the world esp. Julia & Sophie (-: and for those, who are always children of the 70s^^.
The Wombles were a novelty pop group featuring musicians dressed as the characters from children's TV show The Wombles, which in turn was based on the children's book series by Elizabeth Beresford. Songwriter and producer Mike Batt wrote the series' theme tune, and went on to perform and produce a number of highly successful albums and singles as The Wombles.
Filmfair acquired the television rights to The Wombles and commissioned Batt to write the theme song. He waived the flat fee for writing a single song and secured the character rights for musical production to write songs under the name The Wombles.

To help him get into character, Batt's mother made him a Womble suit, which he wore for a week prior to writing the first songs.

The band released several LPs and singles. All four studio albums went gold and four of the singles reached the Top 10. The Wombles were the most successful act of 1974, with albums in the UK charts for more weeks than any other act.

A single called Wombling U.S.A., written to break into the American market, was recorded in 1974 but was not released.

Several of the songs were included in the soundtrack of the 1977 film Wombling Free.
The Wombles were featured in BBC-sponsored theatrical shows all over the UK during the 1975 Christmas season. However due to a dispute over the rights to the stage shows, none of them had anything to do with Batt. It was a public relations disaster with media reporting that hundreds of children was disappointed with the "imitation Wombles".

To "split" the group, Batt decided to have Wellington Womble leave to pursue a solo career. In 1976 Wellington released a solo single called Rainmaker.
Wombling Merry Christmas was released as single from the Keep on Wombling album (1974) (ty wikipedia)

lyrics:
Open your eyes, look to the skies when you're lonely,
There will be stars shining for you.
Sleepers awake, it's getting late, snow is falling.
The whole wide world is wombling too.

All day long we will be wombling in the snow,
We wish you a Wombling Merry Christmas.
All day long we will be laughing as we go.
We wish you a Wombling Merry Christmas.

Under the ground there is the sound of a symphony.
The lights are low, the fire is bright.
Wombling through, I'll tune into you, you tune into me.
We'll send a message into the night.

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Merry christmas - Frohe Weihnachten - Geseende Kerfees! - Vasel Koleda - Joyeux Noël - Kala Christougenna - Buon Natale - Sretan Bozic - Prieci'gus Ziemsve'tkus! - Wesolych Swiat! - Boas Festas - Craciun fericit - Pozdrevlyayu s prazdnikom Rozhdestva! - God Jul - Sretam Bozic! - Feliz Navidad! - Prejeme Vam Vesele Vanoce - Kellemes Karacsonyiunnepeket! - Glædelig Jul! - Vrolijk Kerstfeest! (less info)