The whole movie takes place in the woods, the actors/singers are clad in brightly colored outfits. The tree's and rocks sing. And the only 2 songs I can remember them singing is :
There were ten in the bed and the little one said rollover rollover and John Jacob Jingleheimer Schmit... anyideas? Its early 1990s... 1995?

YouTube - Wee Sing in Sillyville (1/11) (http://www.youtube.com/watch?v=98QDqxo9K2s&feature=related) ?