I searched for Cyberpunk and Synthwave type music and found this track: Arctic Moon - Cyberpunk
https://soundcloud.com/fsoe-recordings/arctic-moon-cyberpunk
I will be using this as placeholder music for educational purposes as I do not have permission to use the music commercially.
There are parts of the song which I don't think fit with my theme, but there are two particular parts of interest.
There is a fast drum section at the start, which I will create a loop out of and use as the in-game soundtrack.
There is also a slow floaty part near the middle which will serve as the main menu music.
I cut the loops using the free software Audacity and imported them into my game.