"2112" is a side-long title track from Canadian rock band Rush's 1976 album of the same name. The overture and the first section, Temples of Syrinx, were released as a single and have been featured in most of Rush's setlists since. The "sci-fi" sounds in the beginning of the song were created using an ARP Odyssey synthesizer and an Echoplex tape delay. On the "2112 / Moving Pictures" episode of the documentary series Classic Albums, producer Terry Brown states the synth intro is composed of various parts played by Hugh Syme that were put together in a collage. Since 1997, when any parts of the song are performed live, they are transposed down one full step, as heard on every live album and DVD from Different Stages forward.With the combined movements being twenty minutes and thirty-three s