Here's the German singer's website: http://www.frankenbarde.de/.

He seems to specialize in Frankish/Franconian(?) humorous songs. I can't tell whether he is singing in dialect, but I assume he does, because part of his web site is written in a dialect for which he provides a German translation.

The web site contains links to the YouTube video of FRÄNKISCHE KRANKMELDUNG (Frankish Sick Leave) as well as other videos and audio files, but I couldn't find any lyrics. I also couldn't find any mention of Pat Crooksey. I also couldn't find the singer's real name. He seems to only call himself Frankenbarde—Bard of the Franks—but I may have overlooked something.