G'day, all!

I've listened to this song for a few times in videos and streams (including Geel's rocket-jumping stream) and I absolutely love it. Thing is, I don't know the name of this song and therefore can't listen to it again, and again and again.......

The only part I now remember is this : https://musescore.com/user/359106/scores/1174921

Hope you miracle makers can recognise it and tell me the name~~~

Thanks,
~Sollertia_