It's from an eighties song called 'Da da da' (work out the rhythm) and has been used on other adverts in the past.
A company called Ariston used it to advertise their kitchen electricals, to the same tune - it went 'Ar-ist-on and on and on' and was equally catchy......
When you buy an Ariston
Its guarantee is five years long,
That's nineteen ninety-one!
Ariston!
And-on-and-on-and-on-and-on.
One million French think they're très bon,
Half a million Germans can't be wrong,
From Italia to Bri-ton,
Ariston!
And-on-and-on-and-on-and-on.
Tune: Da-Da-Da by Trio
