this is one thing that happens to some songs just when the producers just did the switch from big old analog studios to total ITB production. no mackie desk + emu, just logic on a macbook, it takes a few years to get that up to scratch again. i remember a c4c track that was pretty good, trance and bass kind of thing, and on the drop the compressor mashes the entire mix to shit. technical issues as well as weak song writing.