Bobby Long was a dancer, born in 1932, who died in 2005.
Biography
Bobby Long (born Bobby Earl Logsdon, March 27, 1932 - October 31, 2005) was an American child actor, most known for his role as high school student Johnny O'Brien in the 1947 musical It Happened in Brooklyn, performing the Jule Styne Sammy Cahn song "I Believe" alongside Frank Sinatra and Jimmy Durante.
From the Wikipedia article “Bobby Long (child actor)”, licensed under CC BY-SA 4.0.
Facts from Wikidata (Q139819821), CC0.