I just bought the Curtis Mayfield Single Anthology on the Sequel label. I was interested in all the single edits included on the comp, but to my surprise a couple of the singles are also in mono: (Don't Worry) If There's A Hell Below, We're All Gonna Go (single edit) Freddie's Dead Superfly (single edit) Does anybody know if these were the only Curtis Mayfield singles to be released in mono?