As it turns out, when Lang heard Ischi do his thing, he was so impressed that he took him under his wing. Think about that for a second. That would be like a kid obsessing over Wilco albums, getting really good at writing songs, and eventually getting the chance to be mentored by Jeff Tweedy.
As you near the end of your mixing work, keep mastering in mind and start considering what mastering can and cannot do to help finish the sound. Remember that mastering is only the work done on the combined stereo (or multi-channel surround) audio file. So if you want a particular voice turned down or keyboard turned up, for example, this should be done in the mix where you have access to these tracks independently.