Hey dork, I actually think this was a great idea
It's almost like an experiment in music psychology. Just goes to show how closely tied our perception is to our hearing.
The Batman theme makes the trailer feel a lot darker, more ambiguous.
The Justice League music gives it a more heroic, yet optimistic feel.
I personally like the S1 Batman best, because in my opinion that's the one with the most dramatic change.
Honestly, in my mind, it conjured up a completely different, much darker universe for the show.
I mean: Lex is already perfect for dark and dangerous.
But Lois singing "I've got a crush on you" seems like she could be playing a double game (Mata Hari, anyone?), Perry in that newsroom scene appears to be a little diabolical. Martha and Jonathan's faces when they're on the phone suddenly are more shocked than just surprised.
Heck, even Superman breaking through the wall and pushing that space station looks like he could be up to no good.
And the final scene is really a lot more ambiguous and powerful.
Gosh, I look forward to The Dark Knight ...
Another job well done
Eva