This breezy ska-pop song manages to look more punk than it is, simply by using a grainy black and white filter. There's not much else to it, but it's worth mentioning (if you didn't already know) that Armstrong is formerly of the punk band Rancid - who were big in the mid-90's - and counted The Clash as a major influence. You can sort of see that same influence here, but mostly in the visuals.
Sweetnam is a Canadian artist who was nominated for a Juno Award in 2006 ("Tangled Up in Me"), and describes her next album as "Nine Inch Nails meets Britney Spears." Umm.