Only one song from the Henk album appeared as a demo among collectors.
The demo version is clearly another take of the song, but it doesn't deviate much from the released version. There are soft echo-y and distorted vocals in the background during most of the song. The lead vocals disappear almost completely to the background at one point, but that seems to be a mixing mistake or maybe Henk was far away from the microphone. Also the lyrics to the second half of the song are sung as if they are not final yet and they sound somewhat mumbled. The song continues with the puffing drumbeat for a few seconds at the end after all the other instruments have stopped.