Def out of key, and thats not always a bad thing but in this case its a very bad thing. I would learn your scales and be strict about staying inside of them because it sounds like your gonna make something different that what everyone else is doing and thats great but its gotta sound good on the ears. if you can't hear that its out of key, you may be tone deaf which isn't the end of the world if you learn your scales.
1:06-1:24 sound in key and good but then at 1:25 it gets even worse out of key than before.
I went and listened to some other beats just to see if maybe it was just this beat and it seems to be a pretty general vibe across the board that they're all out of key. Like Melodic Mosquito didn't sound that bad actually, I stopped after Happiness and sorrow. I would maybe lay off on uploading beats for a little while until you get these scales down. If your money is alright and you want a quick fix pick up a native instruments komplete kontrol keyboard you can press a button and the midi controller will turn off all the notes that are not in key keeping your pitch perfect 100% of the time. I personally use the Komplete kontrol 61 and love it its a great piece of hardware. I'll give you the link to the keyboards I'm talking about.
Komplete : Keyboards | Products check them out and I hope this helps. once you get the hang of the scales you'll probably wanna start fresh and delete the beats you've uploaded. we all start someone, my beats were awful back when i first started, i learned scales from "Piano for dummies" I read about half the book and I was good.
As for your question about the sound in the background of my beat "Crown" the initial sound is similar it just sounds more prominent but to put it in the background I dropped some of the low end and high end with an eq and added heavy meta verb and reverb thats all.
Keep learning, I've been at this for a long time and I still learn new techniques.