Cheers SCR101.5 but it is not Nexus 21 which I have but you are on the right lines. I am trying to find a soundclip of the other one you mentioned.

Dara, thanks and you are on the right lines but it is not FXU.

In case this may jog a few memories, it has just occurred to me that the track I want is similar to Rob Mello's Fantasize(clip linked below). It doesn't have the same keyboard riff but the sounds used and the general style of the track remind me of this track a lot. So if you imagine the keys in the Tonto's Drum track played with the instruments from Fantisize (not the bass) you would have a pretty good idea of how it sounds.

Rob MELLO/LUKE SOLOMON aka THE DIGITAL KID/FREEFORM FIVE/C++ aka JOSHUA - Rob Mello's No Ears Mix (sampler)

Any more ideas anyone please?