These are just a couple terms I've come up with to describe the level themes I've been making for AFF.
Note: The terms below were created by me, although this style of music probably has another name. I am a self-taught pianist, so I am not familiar with terminology relating to music.
GOE stands for Gradual Octavian Escalation. It is the gradual increase of each octave in a song. An example of this would be in my version of Ievan Polkka. The song starts off pretty low, then moves on to higher and higher notes until it reaches the end of the planned escalation (or of my keyboard). The song can be terminated there, restarted at the bottom directly, or transitioned all the way back down.
GOD stands for Gradual Octavian Deescalation. It is the gradual decrease of each octave in a song. An example of this would be in my version of Sakkijarven Polkka. The song starts off pretty high, then moves on to lower and lower notes until it reaches the end of the planned deeescalation (or of my keyboard). The song can be terminated there, restarted at the bottom directly,or transitioned all the way back up.
In both of my arrangements of the Ievan and Sakkijarven Polkkas, I also loop the songs to force them to start at every single octave in the song. In Ievan Polkka, for example, I start at the second octave, go through to the fifth, then start at the third.I then go through the fifth again, but start at the fourth the next iteration. Once I start at the fifth, I end the song and the game engine starts from the beginning. This same process is done in reverse for Sakkijarven Polkka.
Well that's about it. If you are sure there's a name for the things I went ahead and labeled myself, go ahead and post it in the comments.