@Peter Sauleda Hi Peter, a few things that really stand out to me: 1 - It sounds really heavily compressed .so I'd back on up that a LOT, or just remove whatever is squashing it completely for now. 2 - It starts pretty big, so there's nowhere for it to go so it doesn't feel like it builds much...so I'd completely replace that opening section with something much lighter - hinting at/introducing the main idea...more atmospheric and restrained at lot less happening musically. 3 - It sounds cluttered and unclear to me - I'd try to just have a main idea, a clear bassline and rhythm. Make sure the rhythms are tight and the tracks are aligned really well. The bass and drums seem bit buried, which could be the high levels of compression...but it sounds very treble-heavy to me, I think arrangement-wise you need to make each of those layers clearer, and build each of them up more. Double instruments up at the octave to make them beefy. Trailer music needs to be very direct, and speak clearly. (EDIT: I think actually there may be really deep drums that are too loud and bassy, that are ringing out and nuking the actual bass, putting the mix out of balance, and triggering the over-compression possibly too. It sounds treble-heavy because the low drums are taking up all the space down there and drowning out any bass instruments....I *think*..it's a bit hard to tell. But I'd try easing up on those deep drums, seeing if they can cut off faster, and maybe cutting some really low end on them...see if that helps.)