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...