Hi there! I hope I'm in the right place for this (I don't have much experience with forums so I apologize for any mistakes)
I've been looking for a short that aired on Noggin circa 2003. (US)
The short featured a penguin and a polar bear. They are accompanied by a musical number sung by a female. They go on an adventure in a snow sled, going up either into space or the stars. I could be misremembering some details since ya know (I was 5) I know for certain it wasn't any sort of main programme. I've had some people send me some Pingu episodes that are close, but I know it isnt Pingu. The short is stop motion animated, it seemed like clay and some paper mache', neither of the characters ever spoke. The polar bear and penguin were wearing beanies and scarfs. This aired before Moose and Zee were the mascots. I have done the youtube searches for anything related but turned up null of course. I've looked up Noggin bumper compilations to see if maybe it's in there at random.
If I need to provide further details please let me know! Thank you!
Try looking at Noggin commercial breaks that are uploaded on YouTube. Especially around the year 2003. You may have a chance at finding the short you remember. Some of the videos are quite long, I suggest you skim through them.