These mx numbers can be frustratingly unreliable. I noticed that Connor: BG on Record and Lord's online discography TJD both have the Chicago mx number for "Clarinetitis" listed as C-2007-A and Brian Rust has it as C-2005-A. The "E" numbers? Don't even go there!
It begs the question was "Clarinetitis" recorded? released? first or "That's aplenty"? Or does it matter?
Jim