Spielberg was able to function autonomously in Kubrick's absence, but said he felt "inhibited to honor him", and followed Kubrick's visual schema with as much fidelity as he could, according to author Joseph McBride. Spielberg, who once referred to Kubrick as "the greatest master I ever served", now with production underway, admitted, "I felt like I was being coached by a ghost." The film was released in June 2001. It contains a posthumous production credit for Stanley Kubrick at the beginning and the brief dedication "For Stanley Kubrick" at the end. John Williams's score contains many allusions to pieces heard in other Kubrick films.