Wow, it's been a long time (and a lot of music heard) since I last posted to this section. Parenthood will do that.
I haven't exactly been listening to The Planets the way most people might--I've mainly been listening to "Venus" slowed down to 1/4 the usual tempo, something I've wanted to do for a long time. I used Ableton Live to slow the tempo without dropping the pitch. The result...is forty minutes of nearly-ambient texture. At this extension of tempo shifting, Live's warping function puts in little glitches and pitch wobbles--even with the most source-friendly settings--but these too are enjoyable. Recommended for those with tempo-warping software. ("Neptune"'s not bad, either, but "Venus" is where it's at.)