If top medical boffins get their way, the hills could soon again be alive with . . . you know where this is going. Dame Julie Andrews lost the ability to sing more than a decade ago following an operation to remove benign nodules from her vocal chords. But scientists now believe they may have a way of constructing synthetic chords. Hey, never mind granting Julie Andrews the ability to sing. Shouldn't they be sticking the pseudo-organs into that John and Edward off The X Factor? Ha, ha!