Oh yes, that's right.. Flemmish. I have heard the language, so I know how close to Dutch it is. Along with different words, the language is also softer (the 'G's are pronounced much softer than in Dutch, as are the 'ch's.) Otherwise, it's easy to understand if you know Dutch.

I have a song in Flemmish ("Ik ben hier" by Joost Zweegers), but I have heard other stuff in Flemmish as well.