:::My best guess would be a vocorder of some kind. Maybe Cher will do a duet :::with the Daleks =-) DAve. ::: btw.: I thought this , too. BUt now I think this momentary fashionable effect is done with a special effect unit i read of some weeks ago, it is a real time pitch shifter (main purpose to fix shitty song lines, tuned to maximum). m.c.