MomofSix- Whatever it was that you and your DH heard, it is not the norm. I have stayed in the 1500 loop plenty, and I have not heard the music that you mentioned. I wonder where it was coming from- if it was from the campfire area, it would have been really loud for folks in 1400.
You are right- nothing wrong with the 2000 loop at all!
As far as the hike to the Meadow area is concerned, have you tried walking over to the 900 loop footbridge? Or, just crossing the canal between 2000 and 2100 by foot? It is not a long walk to the Meadow TP at all via one of these routes.
TCD