Billy Joel
From Muppet Wiki
Billy Joel (b. 1949) appeared on Sesame Street during Season 20 (1988), singing "Just the Way You Are" with Oscar the Grouch.
He also sang "The Alphabet Song" to the Anything Muppets.
His song, "New York State of Mind," was sung by Floyd in episode 209 of The Muppet Show and by Rowlf on the album Ol' Brown Ears is Back.
