"House On The Hillside" is a song from the Wake Up Jeff! album from 1996. This is one of the tracks that does not appear on the video.
There's a house on the hillside and there lives a little mouse inside
Who loves to play his accordion each night
When the stars comes out, he runs about, from house to house that little mouse
And play you all his sweet lullaby
- An instrumental track is played on Interview with The Wiggles' Mums.