I was wondering: Is the eery sound that the tripod's make featured in any of the songs?
No. I did ask Matessino [ in this thread] and he responded that at one point it was considered for inclusion but decided against it. [See below]
Me: I just wanted to know if the Tripod trumpet like blast effect was created by John Williams in pre production? If so it would be nice to have that as an added Easter Egg on this set!
MM: It wasn't musically created actually. I did think about having it but there was no clean element for it, and the mood at the time the project was getting finalized was not one in which it felt like a good idea to scare listeners out of their wits with this siren of doom.