I think I know exactly what you're talking about. It's running in Toronto right now...
This is the "simplyivory.ca" commercial, goes something like this.
"This is a call to arms" White background, black text on screen
"knees" You see the various parts of a girl, legs
"and belly buttons" Shot of belly
"Let's start a low-maintenance revolution" is inscribed in a bar of white soap
"simplyivory.ca"
Bath and body wash or something. It's very pretty; sounds a bit tango-ish. It begins with guitar or eukelele or banjo strumming, then moves into trumpets... I don't think there are violins though.
I'm DESPERATELY looking for this song. It's very pretty.