Michael Anthony Orlando Cassavitis ( born April 3 , 1944 ) better known as Tony Orlando is a American singer who was best known for being in the singing group , Tony Orlando and Dawn with Dawn and they were known for singing the songs , `` Tie a Yellow Ribbon Round the Ole Oak Tree '' , `` Knock Three Times '' , and `` He Do n't Love You ( Like I Love You ) '' . Michael Anthony Orlando Cassavitis ( born April 3 , 1944 ) better known as Tony Orlando is an American singer best known for his work with the group Dawn in the early 1970s .