If you are a musical purist you may never have like her, but many people have a fondness for Bonnie Tyler - particularly her hit Total Eclipse of the Heart.  Now, however, Ms Tyler we fear has fallen on hard times and has, ahem, changed a few words of her old hit to create a TV advertising campaign for some company or other.  At the very least this has been done with huge good humor - and there are one or two sly digs at other pop and rock heroes too.  Can you spot them?