I have been added to the Geometry Dash's whitelist to have my music in the custom levels! Thank you to @TaetuhChips and @DJ37 for making this possible!

To use my music, go to the options in the level creator and select a custom song. Then, enter my song id at the very end of the newgrounds link!

Example: Lost https://www.newgrounds.com/audio/listen/842970

ID: 842970

P.S. I am Adelony87 in Geometry Dash, which is why my username is ClockbeatAdelony87. I've been waiting for this moment for 3 years!!!