Is "der" an actual spanish word?

I've recently been listening to la canción Der pelo by Bebe. But the thing is, I have no idea what "der pelo" is supposed to mean. I know that pelo = hair, but what about the der? It might be spelled incorrectly on purpose as she does that a lot in this album (even in the name of the album "Un Pokito De Rocanrol"). Does anyone have any idea?

submitted by /u/mister_cow_
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