Yesterday When I Was Young

From Muppet Wiki

Written by
Music by	Charles Aznavour
Lyrics by	Charles Aznavour (French); Herbert Kretzmer (English transl.)
Date	1964 (french), 1969 (english)
Source	"Yesterday, When I Was Young" (Roy Clark album)
Publisher	Hampshire House Pub. Corp.

Roy Clark sang his 1969 hit, "Yesterday When I Was Young" on episode 303 of The Muppet Show.

The song was originally titled "Hier Encore" in French, and was written and recorded by first season guest star Charles Aznavour.