It seems to be debatable
http://www.amazon.com/gp/product/B00...=glance&n=5174
Know Your Classical Gas, January 4, 2005
Reviewer: Les Ferch - See all my reviews
This album, released in 1987, may not be the one you want...
The song Classical Gas, by Mason Williams, has been recorded dozens of times. Mason Williams has recorded at least three different versions himself, so it's not too surprising that many people end up buying something different than they expected. Here is a list of some of the more notable versions:
Title: Classical Gas
Performer: Mason Williams
Album: Handmade
Year: 1970
Comment: This superb acoustic version is my favorite. It also appears on the 1999 "The Story of Us" soundtrack. Many MP3 files circulating the Internet incorrectly credit this version to Eric Clapton.