I'm just going to type as I listen. That clicky thing in the middle (not the stereo stuff) - is a bit too loud in the beginning - not bad... Just enough to say "hi! I'm here" too loudly.. Okay - drums coming in now - and holy cow... The space you've got around them is amazing... Very good... Vocals are also very clear... Very clear. (Also - that clicking sound in context of the song after the drums and vocal come in - isn't too loud) Wow... backup vocals are well recorded, too. Very clear. Everything in this mix is very clear.
As the song is continuing (about half-way through now)... The saxophone, bass, and other instruments that aren't vocals and drums don't quite have the clarity that the vocals and drums do. Usually, in my experience, that's a pretty safe way to mix, but I think it might be taken to the extreme here. Even the guitar solo coming in now at about 3:45 is sitting behind the drums in the mix - and it should be about the same level as the vocals (because it's never going to compete with them)... Same with the sax solo after... Give it the same limelight as the vocals... As it is in the mix now, it's kind of just another layer of instrumentation.
As far as tracking goes, everything is so, so clear... Very well done *chef's kiss*