Synth sounds in the intro of Iron Maidens MOONCHILD

[Chiguete]

So can someone help me out with this? Next month I will be opening up for an Iron Maiden tribute band and me and some friends will be perfoming a couple of songs that they are not thinking on playing, one of them is Moonchild. So can anyone help me with the synth sounds with delay in the intro of the song? I have never tried to do synth sounds so I'm way out of my league on this one.

PS:
If you can dial the delay settings it would be good too

UP THE IRONS!