Yankovic's official website has the following note:

Unfortunately, there are a lot of song parodies floating around the Internet being attributed to Al which are in fact done by somebody else. "Star Wars Cantina," "Windows 95 Sucks," "Living La Vida Yoda," "Combo No. 5," "What If God Smoked Cannabis," "He Got The Wrong Foot Amputated" (the list goes on and on ... some of the titles are unprintable in a family-friendly web site) - these songs are NOT by Al. If you want to verify whether or not a song is actually by Al, check the Catalogue page.
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