The opening synthesizer part was played by Dave Hentschel, a producer and engineer who was one of the few people who could program and play the instrument. Hentschel worked at Trident Studios in London, which owned a Moog synthesizer he would operate for bands who recorded there. When the ARP company introduced a competing model, the ARP 2500, Trident's owner bought one and had Hentschel learn it. When "Rocket Man
" was assembled at Trident, producer Gus Dudgeon had Hentschel use the ARP to add some space sounds to the mix.Goodbye Yellow Brick Road
was also overdubbed and mixed at Trident, so when they needed synth, they again called on Hentschel. Using a 16-track tape machine, he recorded short portions of two other tracks from the album, "The Ballad of Danny Bailey" and "Candle In The Wind
," which he layered together with other elements to create the intro. The whole piece was then spliced to the beginning of the song - Elton didn't hear it until it was finished.