Nightmares?
Hmmm...this seemed more upbeat than scary to me. Like, obviously not all shiny and happy, but until that very fast synth came in and overtook the song it was a more cheerful, if a bit sad, tune. Or I at least thought so.
Either way, the beat is awesome, and the breaks in the song that sort of interupt the happy are all well-placed and cool sounding. And the main melody is beautiful.
Again, an amazing track from you and your friend. Such good stuff here.