I expect an extremely long Pickles the Firecat post replying to this thread 
Define
extremely.
I would probably take Entroducing. A lot of my favorites don't fit the right feeling of a deserted island record. Like, I don't think I would want to bring Shaking the Habitual or Silent Shout because they heavily emphasize what it is to be a part of modern society and how modern society shapes us as individuals. Maybe that would keep me grounded. But it could just as easily spark a longing to reconnect with society. Same with a lot of other records like Third or Black City. Too heavily invested in human to human connections or other things I would be missing. I'd consider Cosmogramma, Permutation, Black Up, Elements of Light, and other records in that lane for how detached they can be. Endtroducing wins out in the end though. Perfectly straddles being a record that can put me at peace and also push me through the several existential crises that would hit. Could you imagine a thunderstorm with
Mutual Slump paired to it? Staring up at the Milky Way with
Midnight In A Perfect World? Would be so dope.
Tycho - Dive
If you want an experience kind of close to being on a deserted island with Tycho he's going to be
playing Pappy & Harriet's with Com Truise October 26th. Full band, too. Pappy & Harriet's is a super cool venue out near Joshua Tree. It's an old saloon built when Pioneertown was still a tourist attraction for people heading out to camp. Now it's pretty much the only thing for miles and miles and miles until you hit Coachella Valley. Shows are outside with a clear view of the stars. Really, really cool place. Acoustics are whatever, but the full experience is a ton to take in. Here's a
couple pictures from the venue. idk where you're located but it's worth crashing at a hotel for a night for.