oh yep yes yabetcha, I love mixing other people's tracks. Actually, that is ALL I've mixed for several years now. I feel like I'm always mentioning having parkinson's but *sigh* it seems relevant to everything I do
I just can't sprint around and mic up/etc like I could 10 years ago, but dang I sure can sit in the chair!
For the last while I've been mixing projects that come to me via FTP; the bands post their source tracks, I pull them down, put 'em in the mac and do it up. Though I doubt more than a very few peeps on the TOMB have heard anything i've mixed, it's neat that i get a trickle of bands that have me mix their stuff.
Super excited that I'll be mixing in Jackpot! on October 28-30, a band called Yakuza from Belfast northern ireland is flying out here to portland. I'm downloading the last tracks as I type-- yay for cheapish high(ish) speed internerd. I think I'll ask Larry about if I can write an article about this method of working, since I know I can't be the only person doing it.
I think that the 'fresh ear' perspective and focus on 'what's best for the song' is always a good idea. I always insist on somebody else mastering the stuff I mix; last project went to golden, and I really like rfi in seattle. I think the one main 'trick' or whatever I use is that I seem to have an ear for phase, timing, and pitch issues and LOVE taking as much time as is needed to make tracks sound 'right', however that can be defined for a given song. Heck, sometimes a totally 'wrong' phase/timing/pitch relationship yields otherwise impossible overtones or colors.
If drums need to be augmented or replaced, cool. Vocal pitches bent some, cool. I really try to be aware of what the song wants to be, and I don't think that that is pseudo-zen-babble. It makes me feel great-- the best reward-- to help a bands' self-recorded project fit together well and help them maintain the momentum they had at the beginning. We alllllll know what it's like to feel like a project has gone on waaaaaay to long and to've lost all perspective, and even my own projects, when I'd reached that point and gotten a trusted person to mix them, became a million percent more like what I'd envisioned wanting when I'd started them.
And I've learned some important but painful lessons, re: the best outboard/plugins/voodoo rituals can't solve a lame performance or horribly intonated guitar track! If the tracking engineer wasn't into it/was deaf/hung over/high (and long ago I was all of the above, sometimes all at once!), you can't make a turd into a treasure...