Lyalpha

大気圏のアパートから

紙飛行機飛ばしてみたんだ

I'm still a beginner when it comes to Japanese and the first clause here confuses me. Is it saying "I tried to fly a paper airplane from(in?) the apartment's atmosphere."?

I'm a beginner so while asking this question isn't really important now, I thought I would anyway before I forgot it. The general idea I'm getting is to use Kanji in a way that maximizes readability, but are there some things I should avoid? Are there some words that should never be written in hiragana? I've also noticed some words like 君, written in katakana. When is that appropriate?

I came across this in one of Tae Kim's lessons.

私が買った飲み物だから、あげませんよ。

I read this and see a transitive verb (to buy) with the object it is referring to placed after it instead of before it with an を particle. I want to write it as:

私が飲み物を買ったから、あげませんよ。

Is it okay to structure a sentence like the one before if the direct object is clear?

I'm not sure if anyone will read this, but I came up with an encryption scheme for creating passwords for my internet accounts. It requires no memorization or written notes so I feel it is very secure. To test it out, I will post an example of encrypted text and see if anyone here can break it.

Hear it is --> GrDz3;.whyGi#scg(ynw4

Edit: Since you guys are most of the way there, I'll explain the system. I start out by replacing the first letter with the letter above it on the qwerty keyboard. If it doesn't have one I just map that letter to itself. After that, I replace the next letter with the one to the right of it's key on the keyboard (again mapped to itself if it doesn't have a

I heard El dorado by Marjan Mozetich on the radio and found it really nice. A mixture of minimalism and and a sort of post-modern romanticism. Can anyone recommend some other modern composers they enjoy listening to?

降り注ぐ夢

This was part of a song. I know it says furisosogu yume but The best I can translate this to is dream-drenched. What is the actual meaning and how would it be used in a sentence?

It's in the allegra ma poco. It happens at 1:17:16 and later too so I know it isn't a mistake.

https://youtu.be/7tne33CUd0U?t=1h16m10s

Specifically it's an extreme dissonance that I haven't heard before. I can't hear intervals too well but it sounds even tighter then a minor 2nd. Am I just hearing one section of Violins trilling while the other plays unornamented? In any case I haven't heard the effect elsewhere. Does anyone have other examples?

Lately I've been thinking that I would like to learn to play piano. Actually, I really want to learn to play harpsichord but I doubt anyone teaches it to amateurs not in a musical college.

How do most people learn an instrument? I've been dabbling by myself learning basic theory. By now I can stumble my way through some of Clementi's Sonatinas and the most advanced thing I can play fully through is Scarlatti's k3. Of course my technique is bad and I can tell that my fingering and timing are off. I've more or less reached the limit of what I can do on my own so I figure I should get lessons.

I assume most start very young in some sort of youth program and then go to a music school with