Gonna Fly Now was composed by Bill Conti for Rocky, released in 1976 and starring Sylvester Stallone as boxer Rocky Balboa, with lyrics by Carol Connors and Ayn Robbins. The track reached number one on the Billboard Hot 100 in 1977 and became inseparable from the film's training montage, ending with Rocky running up the steps in Philadelphia. Decades later the theme remains a shorthand for perseverance in sports highlights, parodies and social media edits, instantly understood even by viewers who have never seen the full film.