the harvey girls
'Smile Like Gwynplaine' is from the album I've Been Watching a Lot of Horror Movies Lately on Circle Into Square.
Lyrics: Smile like Gwynplaine. Cock your head like Michael [Myers] and smile like Gwynplaine.
You can learn more about Gwynplaine from good ol' Wiki: en.wikipedia.org/wiki/The_Man_Who_Laughs