I'm sure it is. We just stayed lagoon view concierge last week, and even though we never watched from our room or the lounge, we did watch from Ohana's in the GCH one night, and they had the music piped in.
I agree with the poster who said it will be better viewing anywhere outside on the beach or balcony, lanai, etc. though. (I think the music is played on the beach too.)