Very glad you liked the mix, KP. I didn't really design it for anyone but myself so if anyone else likes it that's a bonus.
"Spectrum" is a tremendous piece. Highly distinctive. F+M have made a lot of other good music but none of it really speaks to me like that song.
If you want any guidance about Yes listening, please post here or PM me. I can certainly give you some suggestions and would be totally thrilled to do so. I'm *really* glad you liked "HOTS" and am a bit surprised, in a good way, that you'd never heard it before.
"No Reply At All" is not quite early Genesis, I'd say; it's more mid-Genesis, when they transitioned from a prog band into a pop group following the departures of Gabriel and Steve Hackett. That was why the song appealed to me - its musical choices show the band almost exactly in the middle. Early Genesis would be the first few albums that were very progressive and dominated by Gabriel's ideas. They have a lot to offer. So does virtually any era of that band's career, although I recognize that many of the later songs (the ballads, mostly) are disposable.
On "Fall Down," yeah, their first album (I think it's their first album, but we're talking about the same one, _Fear_, from which Mr. Ected took "Nightingale Song" in this draft, a great pick) is really good and by far better known, but I unintentionally blocked myself from taking anything from it. So I took a listen to "Fall Down," which I had not heard in years, to see if I still liked it from the days when my band covered it. Yep, really dug it. In fact there were several songs that I took that I had not heard in years ("Blue on Black" and "In a Little While" also come to mind) where I was hoping that I would like them as much as I once did, and was pleased to find that to be the case.
"One of These Nights" is cool to me because it does not sound like very much else in the Eagles' catalog, at least not among their well-known pieces. Aurally, to me, it has the most in common with "Witchy Woman," which incidentally is my second-favorite Eagles song. They're both quite haunting and neither has much twang.
"Slide" is just a little gem. I think I mentioned that it has personal resonance for me from 1998 when it came out, and the details of that are not important, but it's a "mood song" that instantly takes me back every time I hear it. I was glad to be able to fit it in even though I listen to it constantly.