Retrograde was a play featured during the 2015 Sydney Fringe Festival, written and directed by Peter William Jamieson. The production featured Jamieson as an actor alongside Australian film legend Mark Lee and portrayed the personal development of their characters through the frame of six court ordered psychology sessions.

This work was the "threshold crossing" music that played as the audience entered the performance space. The music that accompanied this projection was created so that it could be looped indefinitely whilst maintaining some semblance of development, elude to the musical theme of the play, and have the ability to be faded out at any point without seeming "choppy".