Everyone's got a Price Tag

Jessie J's "Price Tag" is a song ostensibly about forgetting about money and just dancing. However, I think it's mode of forgetting is slightly different than it at first appears.
It starts:

Seems like everybody's got a price,
I wonder how they sleep at night.
When the sale comes first,
And the truth comes second,
Just stop, for a minute and
Smile

First off the use of "truth" in the first verse is at odds with the rest of the song's "dance". Dancing seems, in the song, a way of forgetting (the serious), enjoying life; truth would seem to be the opposite - a need for truth at whatever cost to personal enjoyment.The only way this really makes sense in the context of the rest of the song is to put the first few lines in quotation marks:

"Seems like everybody's got a price,
I wonder how they sleep at night.
When the sale comes first,
And the truth comes second,"
Just stop, for a minute and
Smile

Now we have Jessie telling whoever is making the complaint to just "smile," forget truth, forget criticising people for "selling out," just smile and (the rest of the song says) dance.
Thus the song is less about her saying, "I just want to make people dance, I don't care about the money," and more about her saying, "don't worry about the money I'm making or my motives for making music, just dance." Indeed, it goes slightly further to say "don't worry about the truth, concentrate on the sale, and smile..."

Head under water on the weekend

This Rebecca Black video that everyone is (quite rightly) laughing at -

reminds me of a song by Northern Uproar - "Head Under Water" - The literalness of both is amazing. "Friday" completely fails because it doesn't say anything - it has no meaning, hidden or otherwise - the much quoted "Yesterday was Thursday, Thursday/
Today is Friday, Friday/ ... Tomorrow is Saturday/ And Sunday comes afterwards" - shows this, a simple recounting of days - this is, it is true, on a most basic level, what constitutes a week-end, however, as a song, it fails absolutely to tell us anything. Does there have to be at least some level of metaphor for a song to work? Is this the difference between art and non-art?
No. Let's look at the Northern Uproar song, which is even more remarkable. It is a song about having a shower - "I head across the landing floor/ I head to the shower door" - Not as a metaphor for cleansing or for a waking up, or anything really - "Feeling water run down my spine/ Gives me a shiver but I feel fine..." - the brilliant thing is that it doesn't just recount the physicality of the shower - like the Rebecca Black song, which goes through the motions of the day (cereal, bus, car) without any interiority - it recounts the feelings in the shower - "...and I get flashbacks of a life that I left behind what a time" - not as metaphor but as simply descriptive of how his shower was. It's just not a metaphor, it's not a bad one, it's simply his thoughts in the shower. And in a sense it makes it fresh (like his head under the water), ignoring the easy metaphors of the shower, the washing away of sins etc., for, if you'll pardon the pun, a stream of consciousness...