hey man, if you would like to geth your music in geometry dash, you need to get your account scouted first, which is not easy to do. It's basically when someone thinks your music is good. After that your account can be whitelisted by a mod on newgrounds, which is even harder to get done, because you often need to reach to the mods themselves. Only then you're music will be able to be used in gd. Just saying.