......I've always thought that was possibly the reason for the sludgy mix, to match the lyrical content.....if true, then it would be something that sounded like an interesting idea to do in theory but I still feel the result was GODAWFUL (sometimes a terrible production / mix IS the best way to go, Raw Power being the best example of that).....and the best live versions, which personally I feel happened in LA '77, don't sound THIN AT ALL TO ME.....not the 1st solo, any solo, ANY of it.....sounds MONSTROUS STRAIGHT THRU, unlike that studio version......