I'm fairly sure Bernie plays the solo on YNCLAL - it definitely isn't Felder because it was one of only two tracks from the On The Border album that survived from the sessions they did in London with Glyn Johns before they replaced him with Szymczyk. It's probable that Glenn plays the piano on the song too. I asked Austin (WalshFan8
and he thinks the lead guitar was probably a Telecaster, which again suggests it was Bernie. It's in the Guitar Info thread in the Eagles section of the board. I agree in liking the solo a lot, and I think the song itself rocks. I love the dynamics, with the contrast between the quieter moments with the piano to the more intense guitar leads and then back again but with an added sense of resignation at the end. It fits the lyrics and mood of the song perfectly - the guitar solo in particular represents the sort of love the narrator longs for. I can understand why some women are a bit put off by the way he expressed his feelings, but I don't think Don and J.D. were being horrible about it, just disappointed. I can really feel and understand the emotion in the song even though I've never been in that exact situation myself.
The Dogs demo is interesting, but I'm definitely glad that David did the vocals on the first half of the song, which are certainly amongst his most powerful. By contrast, I think Roger's voice was perfect for Pigs (3DO) and Sheep - the lyrics on the former are exceptionally acerbic, even by Roger's standards, and too vitriolic to suit David, while I think David would have struggled to hit the high notes on latter that Roger reaches (I believe David wanted to play Sheep on the post-Waters Momentary Lapse tour, but they ultimately decided not to because he wouldn't have been able to sing it every night).
NMB, your comment about Led Zeppelin reminded me of another thing about Whole Lotta Love. I have long since suspected that my Mum's idea of musical hell would probably bear quite a resemblance to the mid-section with Robert's moaning and groaning and the theremin solo. I've never actually played it to her, but I
know she'd hate it!