Agreed - interestingly (potentially) the soundtrack in those trailers (and from the 2nd force awakens trailer) is not by John Williams, but is a re-arranged / reproduced version
http://www.slashfilm.com/star-wars-the-force-awakens-trailer-music/
Not sure if these have been posted (skimmed over the thread). A clever stick has re-invented the trailers to the original films in the style of one the new trailers. He did 'Empire' first, but here are all 3.
https://youtu.be/nywPf1p-BBY
https://youtu.be/xESiohGGP7g
https://youtu.be/MYD_xxY5wEI