music in the new walkers crisps advert?

[pianoman81]

hi guys,

the new walkers crisps advert- (for "less % fat crisps or whatever these are)

it is a different version of an old tune .

anybody know what it is ?

please.

;)
cheers guys.

[curiosity]

try here: http://www.songofthesalesman.co.uk/ad.aspx?let =Walkers