I didn’t upload mine until now–had to make a soundcloud account–but this is what I did for the challenge!
I didn’t follow the key guidelines, but instead was trying to think of something using GCEA chords and the open Am7 as well, since many uke channels just use the open chord as their “intro sound” and it’s super recognizable even to non uke folks in many cases. (My dog has FLEAS)
My theme was sort of inspired by the 90’s NES video game Little Nemo, Dreammaster, which has an amazing 8 bit soundtrack, especially the mushroom kingdom level. https://youtu.be/AATqdTyhgFo?t=141