The song is called Mambo Italiano and I am quite positive the singer is called Dean Martin
Unfortunately, without specific information or details about the ad or the song, it is difficult to provide an accurate answer. Visa ads feature various songs and artists, so it is best to provide more specific information to help identify the song and artist in question.
Don Thomas - Come On Train (Ian Parton Remix) is the name of the new Visa ad song. You can get it at iTunes here: http://tinyurl.com/byh8ch
the who - who are you
who sings the suburu song on commericial
David Roberts sings the dstv ad song if tomorrow is half as good as today.
REM
the holloways.
GoodRepublic
Michael Jackson
nora jones?
The band that sings the Tna theme song - Cross the line is AD/AM.
Bruises by Chairlift.
Fleming and John